{
  "version": "https://jsonfeed.org/version/1.1",
  "title": "Hacé Cuentas — Updated calculators (EN)",
  "home_page_url": "https://hacecuentas.com/en",
  "feed_url": "https://hacecuentas.com/en/feed.json",
  "description": "Free online calculators: salary, BMI, pregnancy, finance, taxes, math, unit conversions and more.",
  "icon": "https://hacecuentas.com/og-default.png",
  "favicon": "https://hacecuentas.com/favicon.ico",
  "language": "en",
  "authors": [
    {
      "name": "Martín Rodríguez",
      "url": "https://hacecuentas.com/autores/martin-rodriguez"
    }
  ],
  "items": [
    {
      "id": "https://hacecuentas.com/en/80-20-learning-curve-hours-mastery",
      "url": "https://hacecuentas.com/en/80-20-learning-curve-hours-mastery",
      "title": "Hours to Master a Skill: 80/20 Learning Curve Calculator",
      "content_text": "Enter your total target hours and weekly practice time to get the exact weeks to reach mastery. Uses the 80/20 Pareto principle and deliberate practice research by Ericsson.",
      "summary": "Enter your total target hours and weekly practice time to get the exact weeks to reach mastery. Uses the 80/20 Pareto principle and deliberate practice research by Ericsson.",
      "date_published": "2026-06-12T00:00:00.000Z",
      "date_modified": "2026-06-12T00:00:00.000Z",
      "tags": [
        "educacion",
        "hours to master a skill",
        "how many hours to learn a skill",
        "learning curve calculator",
        "80/20 learning rule",
        "skill mastery timeline calculator"
      ],
      "authors": [
        {
          "name": "Martín Rodríguez",
          "url": "https://hacecuentas.com/autores/martin-rodriguez"
        }
      ],
      "language": "en"
    },
    {
      "id": "https://hacecuentas.com/en/baby-teeth-eruption-timeline",
      "url": "https://hacecuentas.com/en/baby-teeth-eruption-timeline",
      "title": "Baby Teeth Eruption Timeline: When Do They Come In?",
      "content_text": "Enter your baby's age in months and instantly see which of the 20 primary teeth should have erupted, how many to expect, and which are coming next. Full eruption chart from 6 to 33 months.",
      "summary": "Enter your baby's age in months and instantly see which of the 20 primary teeth should have erupted, how many to expect, and which are coming next. Full eruption chart from 6 to 33 months.",
      "date_published": "2026-06-12T00:00:00.000Z",
      "date_modified": "2026-06-12T00:00:00.000Z",
      "tags": [
        "salud",
        "baby teeth eruption timeline",
        "when do baby teeth come in",
        "baby teeth chart by age",
        "baby teeth order",
        "teething timeline by month"
      ],
      "authors": [
        {
          "name": "Martín Rodríguez",
          "url": "https://hacecuentas.com/autores/martin-rodriguez"
        }
      ],
      "language": "en"
    },
    {
      "id": "https://hacecuentas.com/en/binomial-probability-calculator",
      "url": "https://hacecuentas.com/en/binomial-probability-calculator",
      "title": "Binomial Probability Calculator — P(X=k)",
      "content_text": "Calculate exact binomial probability P(X=k) for n trials with probability p. Instant results with mean, variance, and a reference table for common values.",
      "summary": "Calculate exact binomial probability P(X=k) for n trials with probability p. Instant results with mean, variance, and a reference table for common values.",
      "date_published": "2026-06-12T00:00:00.000Z",
      "date_modified": "2026-06-12T00:00:00.000Z",
      "tags": [
        "matematica",
        "binomial probability calculator",
        "binomial distribution calculator",
        "P(X=k) calculator",
        "binomial probability formula",
        "how to calculate binomial probability"
      ],
      "authors": [
        {
          "name": "Martín Rodríguez",
          "url": "https://hacecuentas.com/autores/martin-rodriguez"
        }
      ],
      "language": "en"
    },
    {
      "id": "https://hacecuentas.com/en/cedear-dividend-yield-2026",
      "url": "https://hacecuentas.com/en/cedear-dividend-yield-2026",
      "title": "CEDEAR Dividend Yield Calculator (USD to ARS, 2026)",
      "content_text": "Calculate the real peso dividend yield of any CEDEAR. Enter the CEDEAR price, conversion ratio, annual USD dividend, and exchange rate — get your exact ARS yield and annual income instantly. Includes formula, rate comparison table, and worked examples.",
      "summary": "Calculate the real peso dividend yield of any CEDEAR. Enter the CEDEAR price, conversion ratio, annual USD dividend, and exchange rate — get your exact ARS yield and annual income instantly. Includes formula, rate comparison table, and worked examples.",
      "date_published": "2026-06-12T00:00:00.000Z",
      "date_modified": "2026-06-12T00:00:00.000Z",
      "tags": [
        "finanzas",
        "CEDEAR dividend yield calculator",
        "CEDEAR dividend yield",
        "CEDEAR dividend yield formula",
        "dividend yield CEDEAR 2026",
        "CEDEAR ratio conversion dividend"
      ],
      "authors": [
        {
          "name": "Martín Rodríguez",
          "url": "https://hacecuentas.com/autores/martin-rodriguez"
        }
      ],
      "language": "en"
    },
    {
      "id": "https://hacecuentas.com/en/cedears-ratio-conversion-apple-microsoft",
      "url": "https://hacecuentas.com/en/cedears-ratio-conversion-apple-microsoft",
      "title": "CEDEAR Ratio Converter: Apple vs. Microsoft",
      "content_text": "Calculate CEDEAR conversion ratios between Apple and Microsoft stocks. Free tool updated 2026.",
      "summary": "Calculate CEDEAR conversion ratios between Apple and Microsoft stocks. Free tool updated 2026.",
      "date_published": "2026-06-12T00:00:00.000Z",
      "date_modified": "2026-06-12T00:00:00.000Z",
      "tags": [
        "finanzas",
        "cedear ratio converter: apple vs. microsoft",
        "cedear ratio converter: apple vs. microsoft calculator",
        "free cedear ratio converter: apple vs. microsoft calculator",
        "cedear ratio converter: apple vs. microsoft online",
        "calculate cedear ratio converter: apple vs. microsoft"
      ],
      "authors": [
        {
          "name": "Martín Rodríguez",
          "url": "https://hacecuentas.com/autores/martin-rodriguez"
        }
      ],
      "language": "en"
    },
    {
      "id": "https://hacecuentas.com/en/conversion-miles-kilometers",
      "url": "https://hacecuentas.com/en/conversion-miles-kilometers",
      "title": "Miles to Kilometers Converter (+ km to miles)",
      "content_text": "Convert miles to kilometers instantly. 1 mile = 1.609344 km exactly (NIST). Works both ways. Includes reference table for common running, driving, and cycling distances.",
      "summary": "Convert miles to kilometers instantly. 1 mile = 1.609344 km exactly (NIST). Works both ways. Includes reference table for common running, driving, and cycling distances.",
      "date_published": "2026-06-12T00:00:00.000Z",
      "date_modified": "2026-06-12T00:00:00.000Z",
      "tags": [
        "matematica",
        "miles to kilometers",
        "miles to km",
        "mile to kilometer conversion",
        "convert miles to km",
        "how many kilometers in a mile"
      ],
      "authors": [
        {
          "name": "Martín Rodríguez",
          "url": "https://hacecuentas.com/autores/martin-rodriguez"
        }
      ],
      "language": "en"
    },
    {
      "id": "https://hacecuentas.com/en/daily-sodium-intake-mg-hypertension",
      "url": "https://hacecuentas.com/en/daily-sodium-intake-mg-hypertension",
      "title": "How Much Sodium Per Day? Daily Limits by Health Condition",
      "content_text": "How much sodium per day? 2,300 mg for healthy adults, 1,500 mg with hypertension, kidney disease or diabetes. Full table by profile + salt conversion (WHO & AHA).",
      "summary": "How much sodium per day? 2,300 mg for healthy adults, 1,500 mg with hypertension, kidney disease or diabetes. Full table by profile + salt conversion (WHO & AHA).",
      "date_published": "2026-06-12T00:00:00.000Z",
      "date_modified": "2026-06-12T00:00:00.000Z",
      "tags": [
        "salud"
      ],
      "authors": [
        {
          "name": "Martín Rodríguez",
          "url": "https://hacecuentas.com/autores/martin-rodriguez"
        }
      ],
      "language": "en"
    },
    {
      "id": "https://hacecuentas.com/en/estate-settlement-costs-attorney-fees",
      "url": "https://hacecuentas.com/en/estate-settlement-costs-attorney-fees",
      "title": "Estimate Estate Settlement Costs & Attorney Fees",
      "content_text": "Calculate total estate settlement costs including attorney fees, taxes & court fees. Free tool updated for 2026.",
      "summary": "Calculate total estate settlement costs including attorney fees, taxes & court fees. Free tool updated for 2026.",
      "date_published": "2026-06-12T00:00:00.000Z",
      "date_modified": "2026-06-12T00:00:00.000Z",
      "tags": [
        "finanzas",
        "estate settlement costs",
        "probate fees",
        "attorney fees estate",
        "how much does probate cost",
        "inheritance tax calculator"
      ],
      "authors": [
        {
          "name": "Martín Rodríguez",
          "url": "https://hacecuentas.com/autores/martin-rodriguez"
        }
      ],
      "language": "en"
    },
    {
      "id": "https://hacecuentas.com/en/file-download-time",
      "url": "https://hacecuentas.com/en/file-download-time",
      "title": "File Download Time Calculator + Reference Table",
      "content_text": "Find out exactly how long any file takes to download. Enter file size (MB/GB/TB) and internet speed (Mbps/Gbps) — instant result. Includes a full table for common file sizes at 25, 100, 500 Mbps and 1 Gbps.",
      "summary": "Find out exactly how long any file takes to download. Enter file size (MB/GB/TB) and internet speed (Mbps/Gbps) — instant result. Includes a full table for common file sizes at 25, 100, 500 Mbps and 1 Gbps.",
      "date_published": "2026-06-12T00:00:00.000Z",
      "date_modified": "2026-06-12T00:00:00.000Z",
      "tags": [
        "tecnologia",
        "download time calculator",
        "file download speed",
        "how long to download file",
        "internet speed calculator",
        "Mbps to download time"
      ],
      "authors": [
        {
          "name": "Martín Rodríguez",
          "url": "https://hacecuentas.com/autores/martin-rodriguez"
        }
      ],
      "language": "en"
    },
    {
      "id": "https://hacecuentas.com/en/fodmap-foods-intolerance-chart",
      "url": "https://hacecuentas.com/en/fodmap-foods-intolerance-chart",
      "title": "Low FODMAP Foods: Complete Chart for IBS",
      "content_text": "Look up any food to see its FODMAP level, safe serving size, and low-FODMAP alternatives — based on the Monash University database. The fastest FODMAP reference for IBS management.",
      "summary": "Look up any food to see its FODMAP level, safe serving size, and low-FODMAP alternatives — based on the Monash University database. The fastest FODMAP reference for IBS management.",
      "date_published": "2026-06-12T00:00:00.000Z",
      "date_modified": "2026-06-12T00:00:00.000Z",
      "tags": [
        "salud",
        "low FODMAP foods list",
        "FODMAP food chart",
        "high FODMAP foods to avoid",
        "low FODMAP diet foods",
        "foods safe for IBS"
      ],
      "authors": [
        {
          "name": "Martín Rodríguez",
          "url": "https://hacecuentas.com/autores/martin-rodriguez"
        }
      ],
      "language": "en"
    },
    {
      "id": "https://hacecuentas.com/en/hookes-law-spring-force",
      "url": "https://hacecuentas.com/en/hookes-law-spring-force",
      "title": "Hooke's Law — Calculate Spring Force & Constant",
      "content_text": "Calculate spring force, spring constant (k), or deformation using Hooke's Law (F = k·x). Instant results, free, no sign-up required.",
      "summary": "Calculate spring force, spring constant (k), or deformation using Hooke's Law (F = k·x). Instant results, free, no sign-up required.",
      "date_published": "2026-06-12T00:00:00.000Z",
      "date_modified": "2026-06-12T00:00:00.000Z",
      "tags": [
        "ciencia",
        "hookes law calculator",
        "spring force calculator",
        "spring constant calculator",
        "F equals kx calculator",
        "spring stiffness calculator"
      ],
      "authors": [
        {
          "name": "Martín Rodríguez",
          "url": "https://hacecuentas.com/autores/martin-rodriguez"
        }
      ],
      "language": "en"
    },
    {
      "id": "https://hacecuentas.com/en/intermittent-fasting-16-8-calculator",
      "url": "https://hacecuentas.com/en/intermittent-fasting-16-8-calculator",
      "title": "16/8 Intermittent Fasting Calculator — Find Your Eating Window",
      "content_text": "Enter your last meal time and get your exact break-fast time and eating window. Supports 16/8, 18/6, and OMAD protocols. Free, instant, no signup.",
      "summary": "Enter your last meal time and get your exact break-fast time and eating window. Supports 16/8, 18/6, and OMAD protocols. Free, instant, no signup.",
      "date_published": "2026-06-12T00:00:00.000Z",
      "date_modified": "2026-06-12T00:00:00.000Z",
      "tags": [
        "cocina",
        "16/8 intermittent fasting calculator",
        "intermittent fasting schedule",
        "when to break fast",
        "eating window calculator",
        "16/8 fasting window"
      ],
      "authors": [
        {
          "name": "Martín Rodríguez",
          "url": "https://hacecuentas.com/autores/martin-rodriguez"
        }
      ],
      "language": "en"
    },
    {
      "id": "https://hacecuentas.com/en/magnesium-daily-requirement",
      "url": "https://hacecuentas.com/en/magnesium-daily-requirement",
      "title": "Daily Magnesium Requirement Calculator (RDA by Age & Sex)",
      "content_text": "Find out exactly how much magnesium you need per day. RDA table by age and sex (310–420 mg), top food sources, and supplement guide: glycinate, citrate, malate.",
      "summary": "Find out exactly how much magnesium you need per day. RDA table by age and sex (310–420 mg), top food sources, and supplement guide: glycinate, citrate, malate.",
      "date_published": "2026-06-12T00:00:00.000Z",
      "date_modified": "2026-06-12T00:00:00.000Z",
      "tags": [
        "salud",
        "how much magnesium do I need per day",
        "magnesium daily requirement",
        "magnesium RDA by age",
        "magnesium RDA calculator",
        "magnesium glycinate vs citrate"
      ],
      "authors": [
        {
          "name": "Martín Rodríguez",
          "url": "https://hacecuentas.com/autores/martin-rodriguez"
        }
      ],
      "language": "en"
    },
    {
      "id": "https://hacecuentas.com/en/muscle-recovery-hours",
      "url": "https://hacecuentas.com/en/muscle-recovery-hours",
      "title": "Muscle Recovery Time Calculator: How Long to Rest Between Workouts",
      "content_text": "Find out exactly how many hours your muscles need to recover between sessions. Based on muscle group, intensity, age, and sleep — with a full reference table.",
      "summary": "Find out exactly how many hours your muscles need to recover between sessions. Based on muscle group, intensity, age, and sleep — with a full reference table.",
      "date_published": "2026-06-12T00:00:00.000Z",
      "date_modified": "2026-06-12T00:00:00.000Z",
      "tags": [
        "deportes",
        "how long to rest between workouts",
        "muscle recovery time",
        "muscle recovery calculator",
        "rest days between workouts",
        "how many hours for muscles to recover"
      ],
      "authors": [
        {
          "name": "Martín Rodríguez",
          "url": "https://hacecuentas.com/autores/martin-rodriguez"
        }
      ],
      "language": "en"
    },
    {
      "id": "https://hacecuentas.com/en/pace-objetivo-maraton-tiempo",
      "url": "https://hacecuentas.com/en/pace-objetivo-maraton-tiempo",
      "title": "Marathon Pace Calculator — Find Your Required Pace by Goal Time",
      "content_text": "Enter your marathon goal time and instantly get the exact pace (min/km and min/mile) you must hold for 42.195 km. Includes a reference table for common goal times from 2:30 to 6:00.",
      "summary": "Enter your marathon goal time and instantly get the exact pace (min/km and min/mile) you must hold for 42.195 km. Includes a reference table for common goal times from 2:30 to 6:00.",
      "date_published": "2026-06-12T00:00:00.000Z",
      "date_modified": "2026-06-12T00:00:00.000Z",
      "tags": [
        "deportes",
        "marathon pace calculator",
        "marathon pace by goal time",
        "what pace for sub 4 hour marathon",
        "marathon pace per km",
        "boston qualifying pace calculator"
      ],
      "authors": [
        {
          "name": "Martín Rodríguez",
          "url": "https://hacecuentas.com/autores/martin-rodriguez"
        }
      ],
      "language": "en"
    },
    {
      "id": "https://hacecuentas.com/en/pet-age-calculator-human-years-breed-size",
      "url": "https://hacecuentas.com/en/pet-age-calculator-human-years-breed-size",
      "title": "Dog & Cat Age in Human Years: Size-Adjusted Calculator",
      "content_text": "Convert your dog or cat's age to human years using size-adjusted formulas — not the outdated ×7 rule. Small, medium, large, and giant breeds. Instant results.",
      "summary": "Convert your dog or cat's age to human years using size-adjusted formulas — not the outdated ×7 rule. Small, medium, large, and giant breeds. Instant results.",
      "date_published": "2026-06-12T00:00:00.000Z",
      "date_modified": "2026-06-12T00:00:00.000Z",
      "tags": [
        "mascotas",
        "dog age calculator",
        "dog age in human years",
        "cat age calculator",
        "pet age converter",
        "how old is my dog in human years"
      ],
      "authors": [
        {
          "name": "Martín Rodríguez",
          "url": "https://hacecuentas.com/autores/martin-rodriguez"
        }
      ],
      "language": "en"
    },
    {
      "id": "https://hacecuentas.com/en/playlist-duration-songs",
      "url": "https://hacecuentas.com/en/playlist-duration-songs",
      "title": "Calculate Playlist Duration by Song Count & Average Length",
      "content_text": "Calculate total playlist duration by song count and average length. Plan music for trips, parties or workouts. Free online tool. Calculate now.",
      "summary": "Calculate total playlist duration by song count and average length. Plan music for trips, parties or workouts. Free online tool. Calculate now.",
      "date_published": "2026-06-12T00:00:00.000Z",
      "date_modified": "2026-06-12T00:00:00.000Z",
      "tags": [
        "entretenimiento",
        "playlist duration calculator",
        "how long is my playlist",
        "playlist length calculator",
        "calculate playlist time",
        "songs per hour"
      ],
      "authors": [
        {
          "name": "Martín Rodríguez",
          "url": "https://hacecuentas.com/autores/martin-rodriguez"
        }
      ],
      "language": "en"
    },
    {
      "id": "https://hacecuentas.com/en/portfolio-60-40-crypto-traditional-allocation",
      "url": "https://hacecuentas.com/en/portfolio-60-40-crypto-traditional-allocation",
      "title": "Crypto Portfolio Allocation Calculator",
      "content_text": "Enter your total portfolio and crypto percentage to instantly see your dollar split between traditional assets (stocks & bonds) and cryptocurrency. Clear donut chart included.",
      "summary": "Enter your total portfolio and crypto percentage to instantly see your dollar split between traditional assets (stocks & bonds) and cryptocurrency. Clear donut chart included.",
      "date_published": "2026-06-12T00:00:00.000Z",
      "date_modified": "2026-06-12T00:00:00.000Z",
      "tags": [
        "finanzas",
        "crypto portfolio allocation calculator",
        "how to allocate crypto in portfolio",
        "60/40 portfolio with crypto",
        "portfolio split traditional crypto",
        "crypto allocation percentage calculator"
      ],
      "authors": [
        {
          "name": "Martín Rodríguez",
          "url": "https://hacecuentas.com/autores/martin-rodriguez"
        }
      ],
      "language": "en"
    },
    {
      "id": "https://hacecuentas.com/en/rule-of-72-calculator",
      "url": "https://hacecuentas.com/en/rule-of-72-calculator",
      "title": "Rule of 72: How Long to Double Your Money",
      "content_text": "Use the Rule of 72 to find how long it takes to double your money. Enter any annual rate and get exact years, tripling & quadrupling times.",
      "summary": "Use the Rule of 72 to find how long it takes to double your money. Enter any annual rate and get exact years, tripling & quadrupling times.",
      "date_published": "2026-06-12T00:00:00.000Z",
      "date_modified": "2026-06-12T00:00:00.000Z",
      "tags": [
        "finanzas",
        "rule of 72",
        "double money",
        "compound interest",
        "how many years to double money",
        "rule 72 investments"
      ],
      "authors": [
        {
          "name": "Martín Rodríguez",
          "url": "https://hacecuentas.com/autores/martin-rodriguez"
        }
      ],
      "language": "en"
    },
    {
      "id": "https://hacecuentas.com/en/tile-boxes-coverage-calculator",
      "url": "https://hacecuentas.com/en/tile-boxes-coverage-calculator",
      "title": "Tile Boxes Calculator: How Many Boxes Do I Need?",
      "content_text": "Enter your area (m²), coverage per box, and waste % — get the exact number of tile boxes to buy. Includes size chart for common tiles (20×20 to 60×120 cm) and waste factors by pattern.",
      "summary": "Enter your area (m²), coverage per box, and waste % — get the exact number of tile boxes to buy. Includes size chart for common tiles (20×20 to 60×120 cm) and waste factors by pattern.",
      "date_published": "2026-06-12T00:00:00.000Z",
      "date_modified": "2026-06-12T00:00:00.000Z",
      "tags": [
        "construccion"
      ],
      "authors": [
        {
          "name": "Martín Rodríguez",
          "url": "https://hacecuentas.com/autores/martin-rodriguez"
        }
      ],
      "language": "en"
    },
    {
      "id": "https://hacecuentas.com/en/wave-frequency-wavelength-velocity",
      "url": "https://hacecuentas.com/en/wave-frequency-wavelength-velocity",
      "title": "Wavelength, Frequency & Wave Velocity Calculator (v = λ·f)",
      "content_text": "Calculate wavelength, frequency, or wave velocity using v = λf. Enter any two values and get the third instantly. Includes reference tables for sound, light, and radio waves.",
      "summary": "Calculate wavelength, frequency, or wave velocity using v = λf. Enter any two values and get the third instantly. Includes reference tables for sound, light, and radio waves.",
      "date_published": "2026-06-12T00:00:00.000Z",
      "date_modified": "2026-06-12T00:00:00.000Z",
      "tags": [
        "ciencia",
        "wavelength frequency calculator",
        "wave speed calculator",
        "calculate wavelength from frequency",
        "frequency to wavelength",
        "wave equation v=λf"
      ],
      "authors": [
        {
          "name": "Martín Rodríguez",
          "url": "https://hacecuentas.com/autores/martin-rodriguez"
        }
      ],
      "language": "en"
    },
    {
      "id": "https://hacecuentas.com/en/weighted-average-calculator",
      "url": "https://hacecuentas.com/en/weighted-average-calculator",
      "title": "Weighted Grade Average Calculator",
      "content_text": "Calculate your weighted grade average by credit hours using the standard Σ(grade × credits) ÷ Σ(credits) formula. Works with 0–100 percentage grades, the 4.0 GPA scale and 0–10 scales. Free, instant, no signup.",
      "summary": "Calculate your weighted grade average by credit hours using the standard Σ(grade × credits) ÷ Σ(credits) formula. Works with 0–100 percentage grades, the 4.0 GPA scale and 0–10 scales. Free, instant, no signup.",
      "date_published": "2026-06-12T00:00:00.000Z",
      "date_modified": "2026-06-12T00:00:00.000Z",
      "tags": [
        "educacion",
        "weighted grade average calculator",
        "weighted average calculator credit hours",
        "weighted GPA calculator",
        "college GPA calculator",
        "cumulative GPA formula"
      ],
      "authors": [
        {
          "name": "Martín Rodríguez",
          "url": "https://hacecuentas.com/autores/martin-rodriguez"
        }
      ],
      "language": "en"
    },
    {
      "id": "https://hacecuentas.com/en/whey-protein-daily-scoops",
      "url": "https://hacecuentas.com/en/whey-protein-daily-scoops",
      "title": "Calculate your daily whey protein scoops",
      "content_text": "How many whey scoops a day? Enter your weight, goal, diet protein, and scoop size to get your exact daily number. Based on ISSN 2017 protein guidelines.",
      "summary": "How many whey scoops a day? Enter your weight, goal, diet protein, and scoop size to get your exact daily number. Based on ISSN 2017 protein guidelines.",
      "date_published": "2026-06-12T00:00:00.000Z",
      "date_modified": "2026-06-12T00:00:00.000Z",
      "tags": [
        "salud",
        "how many whey scoops a day",
        "whey protein daily dosage calculator",
        "whey scoops per day formula",
        "ISSN protein guidelines calculator",
        "whey protein grams per scoop"
      ],
      "authors": [
        {
          "name": "Martín Rodríguez",
          "url": "https://hacecuentas.com/autores/martin-rodriguez"
        }
      ],
      "language": "en"
    },
    {
      "id": "https://hacecuentas.com/en/cups-to-grams-converter",
      "url": "https://hacecuentas.com/en/cups-to-grams-converter",
      "title": "Cups to Grams Converter (Baking)",
      "content_text": "Convert any number of cups to grams for flour, sugar, butter, oil, milk, honey and 17+ baking ingredients. USDA and King Arthur densities. Free and instant.",
      "summary": "Convert any number of cups to grams for flour, sugar, butter, oil, milk, honey and 17+ baking ingredients. USDA and King Arthur densities. Free and instant.",
      "date_published": "2026-06-10T00:00:00.000Z",
      "date_modified": "2026-06-10T00:00:00.000Z",
      "tags": [
        "cocina",
        "cups to grams",
        "cups to grams converter",
        "2 cups to grams",
        "1 cup to grams",
        "half cup to grams"
      ],
      "authors": [
        {
          "name": "Martín Rodríguez",
          "url": "https://hacecuentas.com/autores/martin-rodriguez"
        }
      ],
      "language": "en"
    },
    {
      "id": "https://hacecuentas.com/en/food-digestion-time-calculator",
      "url": "https://hacecuentas.com/en/food-digestion-time-calculator",
      "title": "How Long Does Food Take to Digest? (Gastric Emptying Calculator)",
      "content_text": "Find out how long food stays in your stomach by food type and portion. Full digestion time chart: water (20 min) to fatty meats (6 h). Based on clinical gastric emptying data from NIH/StatPearls. Free, no sign-up.",
      "summary": "Find out how long food stays in your stomach by food type and portion. Full digestion time chart: water (20 min) to fatty meats (6 h). Based on clinical gastric emptying data from NIH/StatPearls. Free, no sign-up.",
      "date_published": "2026-06-10T00:00:00.000Z",
      "date_modified": "2026-06-10T00:00:00.000Z",
      "tags": [
        "salud",
        "how long does food take to digest",
        "food digestion time chart",
        "gastric emptying time by food type",
        "how long to digest chicken",
        "how long does meat stay in your stomach"
      ],
      "authors": [
        {
          "name": "Martín Rodríguez",
          "url": "https://hacecuentas.com/autores/martin-rodriguez"
        }
      ],
      "language": "en"
    },
    {
      "id": "https://hacecuentas.com/en/guinea-pig-vitamin-c-daily-dosage",
      "url": "https://hacecuentas.com/en/guinea-pig-vitamin-c-daily-dosage",
      "title": "Guinea Pig Vitamin C Daily Dosage Calculator",
      "content_text": "How much vitamin C does your guinea pig need? Calculate the exact daily dose in mg based on weight and health status. Based on Merck Veterinary Manual ranges. Free.",
      "summary": "How much vitamin C does your guinea pig need? Calculate the exact daily dose in mg based on weight and health status. Based on Merck Veterinary Manual ranges. Free.",
      "date_published": "2026-06-10T00:00:00.000Z",
      "date_modified": "2026-06-10T00:00:00.000Z",
      "tags": [
        "mascotas",
        "guinea pig vitamin C calculator",
        "guinea pig vitamin C dosage",
        "how much vitamin C do guinea pigs need",
        "guinea pig daily vitamin C requirements",
        "vitamin C mg/kg guinea pig"
      ],
      "authors": [
        {
          "name": "Martín Rodríguez",
          "url": "https://hacecuentas.com/autores/martin-rodriguez"
        }
      ],
      "language": "en"
    },
    {
      "id": "https://hacecuentas.com/en/401k-contribution-match-calculator",
      "url": "https://hacecuentas.com/en/401k-contribution-match-calculator",
      "title": "401(k) Contribution & Match Calculator",
      "content_text": "Calculate your 2026 401(k) employee contribution, employer match, and projected year-end balance. IRS limit: $24,500 (under 50), $32,500 (50+), $35,750 (60-63).",
      "summary": "Calculate your 2026 401(k) employee contribution, employer match, and projected year-end balance. IRS limit: $24,500 (under 50), $32,500 (50+), $35,750 (60-63).",
      "date_published": "2026-06-09T00:00:00.000Z",
      "date_modified": "2026-06-09T00:00:00.000Z",
      "tags": [
        "finanzas"
      ],
      "authors": [
        {
          "name": "Martín Rodríguez",
          "url": "https://hacecuentas.com/autores/martin-rodriguez"
        }
      ],
      "language": "en"
    },
    {
      "id": "https://hacecuentas.com/en/50-30-20-family-budget",
      "url": "https://hacecuentas.com/en/50-30-20-family-budget",
      "title": "50/30/20 Family Budget Rule",
      "content_text": "Master the 50/30/20 budget rule. Calculate needs, wants & savings for your household—free tool.",
      "summary": "Master the 50/30/20 budget rule. Calculate needs, wants & savings for your household—free tool.",
      "date_published": "2026-06-09T00:00:00.000Z",
      "date_modified": "2026-06-09T00:00:00.000Z",
      "tags": [
        "finanzas",
        "50/30/20 budget rule",
        "family budget calculator",
        "50 30 20 budgeting method",
        "household budget planner",
        "budget needs wants savings"
      ],
      "authors": [
        {
          "name": "Martín Rodríguez",
          "url": "https://hacecuentas.com/autores/martin-rodriguez"
        }
      ],
      "language": "en"
    },
    {
      "id": "https://hacecuentas.com/en/anki-daily-flashcards-memorization-vocabulary",
      "url": "https://hacecuentas.com/en/anki-daily-flashcards-memorization-vocabulary",
      "title": "Anki New Cards per Day Calculator",
      "content_text": "Calculate how many new Anki cards to add per day to finish your deck on time. Enter the total cards and the days available and get the daily pace plus an estimate of reviews and study time.",
      "summary": "Calculate how many new Anki cards to add per day to finish your deck on time. Enter the total cards and the days available and get the daily pace plus an estimate of reviews and study time.",
      "date_published": "2026-06-09T00:00:00.000Z",
      "date_modified": "2026-06-09T00:00:00.000Z",
      "tags": [
        "educacion",
        "anki cards per day",
        "how many new anki cards per day",
        "flashcard calculator",
        "spaced repetition calculator",
        "daily anki cards"
      ],
      "authors": [
        {
          "name": "Martín Rodríguez",
          "url": "https://hacecuentas.com/autores/martin-rodriguez"
        }
      ],
      "language": "en"
    },
    {
      "id": "https://hacecuentas.com/en/duolingo-time-cefr-level-progress",
      "url": "https://hacecuentas.com/en/duolingo-time-cefr-level-progress",
      "title": "Daily Duolingo study time by CEFR level",
      "content_text": "Calculate how many Duolingo minutes per day you need: total study minutes for your CEFR goal ÷ days until your target date. Includes the A1–C2 hour table.",
      "summary": "Calculate how many Duolingo minutes per day you need: total study minutes for your CEFR goal ÷ days until your target date. Includes the A1–C2 hour table.",
      "date_published": "2026-06-09T00:00:00.000Z",
      "date_modified": "2026-06-09T00:00:00.000Z",
      "tags": [
        "educacion",
        "daily duolingo study time",
        "how long to reach b1 level",
        "minutes per day language learning",
        "cefr level study hours",
        "duolingo minutes per day calculator"
      ],
      "authors": [
        {
          "name": "Martín Rodríguez",
          "url": "https://hacecuentas.com/autores/martin-rodriguez"
        }
      ],
      "language": "en"
    },
    {
      "id": "https://hacecuentas.com/en/english-mcer-level-hours-fsi",
      "url": "https://hacecuentas.com/en/english-mcer-level-hours-fsi",
      "title": "How Long Does It Take to Learn English? Calculator by CEFR Level (FSI Method)",
      "content_text": "Calculate how many weeks you need to reach your target English level (A2, B1, B2, C1, C2) based on FSI hour estimates and your weekly study hours. Full hours-per-CEFR-level table included.",
      "summary": "Calculate how many weeks you need to reach your target English level (A2, B1, B2, C1, C2) based on FSI hour estimates and your weekly study hours. Full hours-per-CEFR-level table included.",
      "date_published": "2026-06-09T00:00:00.000Z",
      "date_modified": "2026-06-09T00:00:00.000Z",
      "tags": [
        "educacion",
        "how long to learn English",
        "FSI English hours",
        "CEFR levels hours needed",
        "English proficiency timeline",
        "A1 to C2 study hours"
      ],
      "authors": [
        {
          "name": "Martín Rodríguez",
          "url": "https://hacecuentas.com/autores/martin-rodriguez"
        }
      ],
      "language": "en"
    },
    {
      "id": "https://hacecuentas.com/en/exam-study-time-pages-difficulty",
      "url": "https://hacecuentas.com/en/exam-study-time-pages-difficulty",
      "title": "How many hours to study for an exam: pages ÷ pages per hour",
      "content_text": "Estimate exam study hours: pages to cover ÷ your study speed in pages per hour. Includes a difficulty table to pick a realistic rate. Free calculator.",
      "summary": "Estimate exam study hours: pages to cover ÷ your study speed in pages per hour. Includes a difficulty table to pick a realistic rate. Free calculator.",
      "date_published": "2026-06-09T00:00:00.000Z",
      "date_modified": "2026-06-09T00:00:00.000Z",
      "tags": [
        "educacion",
        "exam study calculator",
        "how long to study for an exam",
        "study time calculator",
        "exam preparation time",
        "pages per hour study speed"
      ],
      "authors": [
        {
          "name": "Martín Rodríguez",
          "url": "https://hacecuentas.com/autores/martin-rodriguez"
        }
      ],
      "language": "en"
    },
    {
      "id": "https://hacecuentas.com/en/flashcards-daily-goal-retention",
      "url": "https://hacecuentas.com/en/flashcards-daily-goal-retention",
      "title": "How many flashcard reviews per day to hit your goal",
      "content_text": "Calculate daily flashcard reviews: total reviews needed ÷ days available. Plan your Anki or SRS workload with spaced repetition benchmarks.",
      "summary": "Calculate daily flashcard reviews: total reviews needed ÷ days available. Plan your Anki or SRS workload with spaced repetition benchmarks.",
      "date_published": "2026-06-09T00:00:00.000Z",
      "date_modified": "2026-06-09T00:00:00.000Z",
      "tags": [
        "educacion",
        "flashcard calculator",
        "daily flashcard goals",
        "spaced repetition calculator",
        "how many flashcards per day",
        "anki reviews per day calculator"
      ],
      "authors": [
        {
          "name": "Martín Rodríguez",
          "url": "https://hacecuentas.com/autores/martin-rodriguez"
        }
      ],
      "language": "en"
    },
    {
      "id": "https://hacecuentas.com/en/porciones-sushi-por-persona-promedio",
      "url": "https://hacecuentas.com/en/porciones-sushi-por-persona-promedio",
      "title": "Sushi Per Person",
      "content_text": "Calculate sushi portions: 10-12 pieces or 2-3 rolls per person. Free online tool with party and catering sizes. Calculate now.",
      "summary": "Calculate sushi portions: 10-12 pieces or 2-3 rolls per person. Free online tool with party and catering sizes. Calculate now.",
      "date_published": "2026-06-09T00:00:00.000Z",
      "date_modified": "2026-06-09T00:00:00.000Z",
      "tags": [
        "cocina",
        "sushi portions per person",
        "how much sushi per person",
        "sushi calculator",
        "how many rolls per person",
        "sushi servings"
      ],
      "authors": [
        {
          "name": "Martín Rodríguez",
          "url": "https://hacecuentas.com/autores/martin-rodriguez"
        }
      ],
      "language": "en"
    },
    {
      "id": "https://hacecuentas.com/en/reading-speed-wpm-book-time",
      "url": "https://hacecuentas.com/en/reading-speed-wpm-book-time",
      "title": "Book Reading Time Calculator (WPM → Hours & Minutes)",
      "content_text": "Enter your reading speed (WPM) and total word count to instantly find how long any book will take. Includes average WPM table and word counts for 20+ popular books.",
      "summary": "Enter your reading speed (WPM) and total word count to instantly find how long any book will take. Includes average WPM table and word counts for 20+ popular books.",
      "date_published": "2026-06-09T00:00:00.000Z",
      "date_modified": "2026-06-09T00:00:00.000Z",
      "tags": [
        "educacion",
        "reading speed calculator",
        "words per minute calculator",
        "book reading time calculator",
        "how long to read a book",
        "WPM to hours"
      ],
      "authors": [
        {
          "name": "Martín Rodríguez",
          "url": "https://hacecuentas.com/autores/martin-rodriguez"
        }
      ],
      "language": "en"
    },
    {
      "id": "https://hacecuentas.com/en/roth-vs-traditional-ira-calculator",
      "url": "https://hacecuentas.com/en/roth-vs-traditional-ira-calculator",
      "title": "Roth vs Traditional IRA Calculator",
      "content_text": "Calculate and compare Roth vs Traditional IRA after-tax balances. Uses 2026 IRS limits ($7,500 / $8,600), your marginal tax rates, and expected return to show which account leaves you wealthier.",
      "summary": "Calculate and compare Roth vs Traditional IRA after-tax balances. Uses 2026 IRS limits ($7,500 / $8,600), your marginal tax rates, and expected return to show which account leaves you wealthier.",
      "date_published": "2026-06-09T00:00:00.000Z",
      "date_modified": "2026-06-09T00:00:00.000Z",
      "tags": [
        "finanzas"
      ],
      "authors": [
        {
          "name": "Martín Rodríguez",
          "url": "https://hacecuentas.com/autores/martin-rodriguez"
        }
      ],
      "language": "en"
    },
    {
      "id": "https://hacecuentas.com/en/savings-goal-monthly-amount-calculator",
      "url": "https://hacecuentas.com/en/savings-goal-monthly-amount-calculator",
      "title": "Savings Goal Calculator",
      "content_text": "Calculate the monthly savings amount needed to reach any financial goal. Enter your target, current balance, time horizon, and APY to get your required monthly…",
      "summary": "Calculate the monthly savings amount needed to reach any financial goal. Enter your target, current balance, time horizon, and APY to get your required monthly…",
      "date_published": "2026-06-09T00:00:00.000Z",
      "date_modified": "2026-06-09T00:00:00.000Z",
      "tags": [
        "finanzas"
      ],
      "authors": [
        {
          "name": "Martín Rodríguez",
          "url": "https://hacecuentas.com/autores/martin-rodriguez"
        }
      ],
      "language": "en"
    },
    {
      "id": "https://hacecuentas.com/en/side-hustle-tax-savings-calculator",
      "url": "https://hacecuentas.com/en/side-hustle-tax-savings-calculator",
      "title": "Side Hustle Tax Calculator (USA)",
      "content_text": "Calculate self-employment tax, federal income tax, and net income from your side hustle. Estimates SE tax (15.3%), QBI deduction, and quarterly payments for…",
      "summary": "Calculate self-employment tax, federal income tax, and net income from your side hustle. Estimates SE tax (15.3%), QBI deduction, and quarterly payments for…",
      "date_published": "2026-06-09T00:00:00.000Z",
      "date_modified": "2026-06-09T00:00:00.000Z",
      "tags": [
        "negocios"
      ],
      "authors": [
        {
          "name": "Martín Rodríguez",
          "url": "https://hacecuentas.com/autores/martin-rodriguez"
        }
      ],
      "language": "en"
    },
    {
      "id": "https://hacecuentas.com/en/speed-reading-progress-improvement",
      "url": "https://hacecuentas.com/en/speed-reading-progress-improvement",
      "title": "How many weeks to reach your target reading speed",
      "content_text": "Estimate the weeks of practice needed to hit your reading speed goal: WPM gap ÷ weekly gain. Typical gains are +15–25 WPM per week with daily drills.",
      "summary": "Estimate the weeks of practice needed to hit your reading speed goal: WPM gap ÷ weekly gain. Typical gains are +15–25 WPM per week with daily drills.",
      "date_published": "2026-06-09T00:00:00.000Z",
      "date_modified": "2026-06-09T00:00:00.000Z",
      "tags": [
        "educacion",
        "speed reading calculator",
        "how long to improve reading speed",
        "wpm improvement calculator",
        "weeks to increase reading speed",
        "reading speed training timeline"
      ],
      "authors": [
        {
          "name": "Martín Rodríguez",
          "url": "https://hacecuentas.com/autores/martin-rodriguez"
        }
      ],
      "language": "en"
    },
    {
      "id": "https://hacecuentas.com/en/study-abroad-costs-budget",
      "url": "https://hacecuentas.com/en/study-abroad-costs-budget",
      "title": "Calculate Your Complete Study Abroad Budget",
      "content_text": "Estimate total study abroad costs: tuition, housing, food, insurance, travel & more. Free calculator for international university planning.",
      "summary": "Estimate total study abroad costs: tuition, housing, food, insurance, travel & more. Free calculator for international university planning.",
      "date_published": "2026-06-09T00:00:00.000Z",
      "date_modified": "2026-06-09T00:00:00.000Z",
      "tags": [
        "educacion",
        "study abroad costs",
        "studying abroad budget",
        "study abroad expenses calculator",
        "university abroad cost",
        "international student costs"
      ],
      "authors": [
        {
          "name": "Martín Rodríguez",
          "url": "https://hacecuentas.com/autores/martin-rodriguez"
        }
      ],
      "language": "en"
    },
    {
      "id": "https://hacecuentas.com/en/vocabulary-active-words-language-level",
      "url": "https://hacecuentas.com/en/vocabulary-active-words-language-level",
      "title": "Active vs. Passive Vocabulary Ratio Calculator",
      "content_text": "Calculate your active-to-passive vocabulary ratio and check whether you're in the healthy 40–60% range. Includes full word-count tables by CEFR level: A1, A2, B1, B2, C1 and C2.",
      "summary": "Calculate your active-to-passive vocabulary ratio and check whether you're in the healthy 40–60% range. Includes full word-count tables by CEFR level: A1, A2, B1, B2, C1 and C2.",
      "date_published": "2026-06-09T00:00:00.000Z",
      "date_modified": "2026-06-09T00:00:00.000Z",
      "tags": [
        "educacion",
        "active vs passive vocabulary",
        "active passive vocabulary ratio",
        "vocabulary calculator",
        "CEFR language levels",
        "active vocabulary words"
      ],
      "authors": [
        {
          "name": "Martín Rodríguez",
          "url": "https://hacecuentas.com/autores/martin-rodriguez"
        }
      ],
      "language": "en"
    },
    {
      "id": "https://hacecuentas.com/en/conversion-meters-to-feet",
      "url": "https://hacecuentas.com/en/conversion-meters-to-feet",
      "title": "Meters to Feet Calculator — Exact Factor + Reference Table",
      "content_text": "Convert meters to feet instantly. Exact factor: 1 m = 3.28084 ft (1 ft = 0.3048 m). Reference table for heights, altitudes, and distances. Bidirectional, free, NIST-accurate.",
      "summary": "Convert meters to feet instantly. Exact factor: 1 m = 3.28084 ft (1 ft = 0.3048 m). Reference table for heights, altitudes, and distances. Bidirectional, free, NIST-accurate.",
      "date_published": "2026-06-06T00:00:00.000Z",
      "date_modified": "2026-06-06T00:00:00.000Z",
      "tags": [
        "matematica",
        "meters to feet",
        "convert meters to feet",
        "how many feet in a meter",
        "meters to feet calculator",
        "feet to meters converter"
      ],
      "authors": [
        {
          "name": "Martín Rodríguez",
          "url": "https://hacecuentas.com/autores/martin-rodriguez"
        }
      ],
      "language": "en"
    },
    {
      "id": "https://hacecuentas.com/en/aceite-motor-capacidad-cambio-km",
      "url": "https://hacecuentas.com/en/aceite-motor-capacidad-cambio-km",
      "title": "Oil Change Interval Calculator",
      "content_text": "Enter your current km and oil type to find exactly when your next oil change is due. Intervals: conventional 5,000 km · semi-synthetic 7,500 km · full synthetic 10,000 km · long-life 20,000 km.",
      "summary": "Enter your current km and oil type to find exactly when your next oil change is due. Intervals: conventional 5,000 km · semi-synthetic 7,500 km · full synthetic 10,000 km · long-life 20,000 km.",
      "date_published": "2026-06-05T00:00:00.000Z",
      "date_modified": "2026-06-05T00:00:00.000Z",
      "tags": [
        "automotor",
        "oil change interval calculator",
        "when to change oil",
        "oil change schedule by km",
        "synthetic oil change interval km",
        "mineral oil change frequency"
      ],
      "authors": [
        {
          "name": "Martín Rodríguez",
          "url": "https://hacecuentas.com/autores/martin-rodriguez"
        }
      ],
      "language": "en"
    },
    {
      "id": "https://hacecuentas.com/en/baby-name-meaning",
      "url": "https://hacecuentas.com/en/baby-name-meaning",
      "title": "Baby Name Meaning Finder — Origin, Popularity & Variants",
      "content_text": "Type any baby name and instantly see its meaning, origin, and popularity. Includes a table of the top 20 most popular names with meanings for 2025–2026.",
      "summary": "Type any baby name and instantly see its meaning, origin, and popularity. Includes a table of the top 20 most popular names with meanings for 2025–2026.",
      "date_published": "2026-06-05T00:00:00.000Z",
      "date_modified": "2026-06-05T00:00:00.000Z",
      "tags": [
        "salud",
        "baby name meaning",
        "baby name meanings and origins",
        "what does my name mean",
        "baby girl name meanings",
        "baby boy name meanings"
      ],
      "authors": [
        {
          "name": "Martín Rodríguez",
          "url": "https://hacecuentas.com/autores/martin-rodriguez"
        }
      ],
      "language": "en"
    },
    {
      "id": "https://hacecuentas.com/en/bandwidth-streaming-bitrate-resolution-youtube",
      "url": "https://hacecuentas.com/en/bandwidth-streaming-bitrate-resolution-youtube",
      "title": "Streaming Bitrate Calculator — YouTube, Twitch & Kick",
      "content_text": "Find the right bitrate for your stream in seconds. Enter your resolution and platform to get the exact Mbps recommendation and minimum upload speed needed — with a full reference table.",
      "summary": "Find the right bitrate for your stream in seconds. Enter your resolution and platform to get the exact Mbps recommendation and minimum upload speed needed — with a full reference table.",
      "date_published": "2026-06-05T00:00:00.000Z",
      "date_modified": "2026-06-05T00:00:00.000Z",
      "tags": [
        "tecnologia",
        "streaming bitrate calculator",
        "bitrate for streaming",
        "1080p 60fps bitrate youtube",
        "twitch bitrate 2026",
        "recommended bitrate for streaming"
      ],
      "authors": [
        {
          "name": "Martín Rodríguez",
          "url": "https://hacecuentas.com/autores/martin-rodriguez"
        }
      ],
      "language": "en"
    },
    {
      "id": "https://hacecuentas.com/en/base-conversion-decimal-binary-hex",
      "url": "https://hacecuentas.com/en/base-conversion-decimal-binary-hex",
      "title": "Convert Between Binary, Decimal, and Hexadecimal",
      "content_text": "Instantly convert between binary, decimal, and hexadecimal. Enter any number, pick your source and target base, get the result immediately. Includes a full reference table and step-by-step explanation.",
      "summary": "Instantly convert between binary, decimal, and hexadecimal. Enter any number, pick your source and target base, get the result immediately. Includes a full reference table and step-by-step explanation.",
      "date_published": "2026-06-05T00:00:00.000Z",
      "date_modified": "2026-06-05T00:00:00.000Z",
      "tags": [
        "matematica",
        "binary to decimal converter",
        "decimal to binary converter",
        "hex to decimal converter",
        "binary decimal hex converter",
        "base conversion calculator"
      ],
      "authors": [
        {
          "name": "Martín Rodríguez",
          "url": "https://hacecuentas.com/autores/martin-rodriguez"
        }
      ],
      "language": "en"
    },
    {
      "id": "https://hacecuentas.com/en/breastfeeding-calories",
      "url": "https://hacecuentas.com/en/breastfeeding-calories",
      "title": "Breastfeeding Calories Calculator — Extra kcal/day by Nursing Type",
      "content_text": "How many extra calories do you need while breastfeeding? Exclusive nursing adds ~500 kcal/day. Enter your weight and activity level to get your personalized total in seconds.",
      "summary": "How many extra calories do you need while breastfeeding? Exclusive nursing adds ~500 kcal/day. Enter your weight and activity level to get your personalized total in seconds.",
      "date_published": "2026-06-05T00:00:00.000Z",
      "date_modified": "2026-06-05T00:00:00.000Z",
      "tags": [
        "salud",
        "breastfeeding calories",
        "how many extra calories while breastfeeding",
        "nursing calories per day",
        "extra calories breastfeeding",
        "breastfeeding calorie needs"
      ],
      "authors": [
        {
          "name": "Martín Rodríguez",
          "url": "https://hacecuentas.com/autores/martin-rodriguez"
        }
      ],
      "language": "en"
    },
    {
      "id": "https://hacecuentas.com/en/free-fall-calculator",
      "url": "https://hacecuentas.com/en/free-fall-calculator",
      "title": "Free Fall Calculator — Time and Impact Velocity",
      "content_text": "Calculate exactly how long an object takes to fall from any height and how fast it hits the ground. Formula t=√(2h/g). Works for any planet gravity.",
      "summary": "Calculate exactly how long an object takes to fall from any height and how fast it hits the ground. Formula t=√(2h/g). Works for any planet gravity.",
      "date_published": "2026-06-05T00:00:00.000Z",
      "date_modified": "2026-06-05T00:00:00.000Z",
      "tags": [
        "ciencia",
        "free fall calculator",
        "free fall time calculator",
        "fall impact velocity",
        "free fall formula t=sqrt(2h/g)",
        "how long to fall from height"
      ],
      "authors": [
        {
          "name": "Martín Rodríguez",
          "url": "https://hacecuentas.com/autores/martin-rodriguez"
        }
      ],
      "language": "en"
    },
    {
      "id": "https://hacecuentas.com/en/swimming-calories-calculator",
      "url": "https://hacecuentas.com/en/swimming-calories-calculator",
      "title": "Swimming Calories Burned Calculator by Style",
      "content_text": "Calculate calories burned swimming by style (crawl, breaststroke, backstroke, butterfly), weight, and duration. Includes MET table for all strokes and comparison with other sports.",
      "summary": "Calculate calories burned swimming by style (crawl, breaststroke, backstroke, butterfly), weight, and duration. Includes MET table for all strokes and comparison with other sports.",
      "date_published": "2026-06-05T00:00:00.000Z",
      "date_modified": "2026-06-05T00:00:00.000Z",
      "tags": [
        "deportes",
        "swimming calories burned",
        "how many calories does swimming burn",
        "calories burned swimming 30 minutes",
        "swimming calories by stroke",
        "butterfly calories burned"
      ],
      "authors": [
        {
          "name": "Martín Rodríguez",
          "url": "https://hacecuentas.com/autores/martin-rodriguez"
        }
      ],
      "language": "en"
    },
    {
      "id": "https://hacecuentas.com/en/carbohydrates-during-exercise",
      "url": "https://hacecuentas.com/en/carbohydrates-during-exercise",
      "title": "How Many Carbohydrates Do You Need During Exercise?",
      "content_text": "Calculate carbs needed per hour by duration and intensity. Reference table, gel and banana equivalents. Based on ACSM sports nutrition guidelines for runners, cyclists and endurance athletes.",
      "summary": "Calculate carbs needed per hour by duration and intensity. Reference table, gel and banana equivalents. Based on ACSM sports nutrition guidelines for runners, cyclists and endurance athletes.",
      "date_published": "2026-06-05T00:00:00.000Z",
      "date_modified": "2026-06-05T00:00:00.000Z",
      "tags": [
        "deportes",
        "carbohydrates during exercise",
        "how many carbs during workout",
        "intra-workout carbohydrate calculator",
        "carb intake endurance running",
        "energy gels per hour marathon"
      ],
      "authors": [
        {
          "name": "Martín Rodríguez",
          "url": "https://hacecuentas.com/autores/martin-rodriguez"
        }
      ],
      "language": "en"
    }
  ]
}