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Carnivore Diet Macros Calculator

Calculate carnivore diet macros: 30% protein / 70% fat / 0% carbs. Reference table from 1,500 to 4,000 kcal. Strict carnivore, nose-to-tail, and lion diet explained.

Data verified · June 2026
Edited by Martín Rodríguez
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The carnivore diet is an elimination protocol built entirely on animal products — zero carbohydrates by design, with energy delivered almost entirely from fat and protein. Standard macros: 30% protein / 70% fat / 0% carbs. Three main camps exist: Strict carnivore (Shawn Baker MD) — ruminant meat, salt, water, nothing else. Nose-to-tail (Paul Saladino MD's earlier protocol) — adds organ meats to fill the micronutrient gaps that muscle meat alone leaves open. Animal-based (Saladino's 2022 update) — nose-to-tail plus raw honey, fruit, and raw dairy, which technically exits strict carnivore but is what many long-term adherents converge on. This calculator gives you daily protein and fat grams for any calorie target, plus a reference table so you can plan meals without guessing.

When to use this calculator

Autoimmune protocol — Hashimoto's, RA, psoriasis, UC flares: 30–90 day strict elimination, ruminant + salt + water, then reintroduce one food at a time to map triggers.
Type 2 diabetes remission — patients with A1c 7–10% running strict carnivore typically drop A1c 1.5–2.5 points in 90 days and deprescribe metformin under MD supervision.
Athlete strict cut — fighters and physique competitors using 8–12 week strict carnivore at ~14 kcal/lb to lean out while protecting lean mass (protein floor 1 g/lb).
Shawn Baker-style strength training — 4,000+ kcal/day, 2.5–3 lb fatty ground beef + eggs + organs, training 5×/week.
Gut reset — patients with severe IBS, SIBO, or oxalate overload using 6–12 month carnivore as elimination, then transitioning to animal-based.

Carnivore Diet Macro Reference (30% Protein / 70% Fat / 0% Carbs)

Daily Calories	Protein (g)	Fat (g)
1,500 kcal	113 g	117 g
1,800 kcal	135 g	140 g
2,000 kcal	150 g	156 g
2,200 kcal	165 g	171 g
2,500 kcal	188 g	194 g
3,000 kcal	225 g	233 g
3,500 kcal	263 g	272 g
4,000 kcal	300 g	311 g

Fuente: fórmula fija de la calculadora (proteína = kcal × 0.30 ÷ 4; grasa = kcal × 0.70 ÷ 9). Valores redondeados. Lennerz BS et al., Curr Dev Nutr 2021 (PubMed 34934897).

How it works

The macro formula

Carnivore macros are fixed at:

Protein: 30% of total calories ÷ 4 kcal/g

Fat: 70% of total calories ÷ 9 kcal/g

Carbs: 0% (trace glycogen in organs only)

Carnivore macro reference table

Values rounded. 1 g protein = 4 kcal; 1 g fat = 9 kcal. Ribeye (USDA 80/20) runs ~1,000 kcal/lb.

Why fat is 70% (and protein has a ceiling)

Phinney and Volek's work pins the protein ceiling in nutritional ketosis at roughly 2 g per kg lean body mass (~1 g/lb for most people). Push protein higher and gluconeogenesis ramps — the liver converts excess amino acids to glucose, blood ketones drop, and the metabolic state most carnivore practitioners are chasing softens. Fat is what fills the calorie envelope above that protein floor. Hungry? Add fat. Losing weight too fast? Add fat. Strength stalling? Hold protein, push fat.

Electrolytes — non-negotiable

Ketogenic diets dump sodium through the kidneys (insulin-mediated sodium retention drops). Target daily intake on strict carnivore:

Sodium: 5,000 mg (≈ 2 tsp added salt on top of food)

Potassium: 1,000–3,500 mg (ribeye supplies ~370 mg per 4 oz; supplement if cramping)

Magnesium: 400 mg (glycinate or malate; muscle meat is magnesium-poor)

Missing electrolytes is the #1 reason people quit in week 2 — headaches, cramps, brain fog, palpitations. None of it is the diet failing; it's a sodium gap.

Why organ meats matter (nose-to-tail logic)

Muscle meat alone is incomplete. 100 g of beef liver delivers ~800% RDA vitamin A (retinol — preformed, no conversion needed), ~600% B12, ~50% riboflavin, ~30% iron, plus choline, copper, and folate. A weekly 3–4 oz portion of liver closes the micronutrient gap that muscle-meat-only strict carnivore leaves open. Heart adds CoQ10. Bone marrow adds glycine and collagen precursors.

The three carnivore variants

Strict carnivore (Shawn Baker): ruminant meat, salt, water — the cleanest elimination baseline.

Nose-to-tail (early Paul Saladino): strict carnivore + organ meats to backfill micronutrients — the preferred default for long-term adherence.

Animal-based (Saladino 2022): nose-to-tail + raw honey, fruit, raw dairy — technically exits strict carnivore but is what most long-term patients converge on once fat-adapted.

Risks to monitor

LDL elevation — about 30% of people are lean mass hyper-responders (LMHR, Norwitz et al. 2022). LDL-C can hit 200–400 mg/dL. Track apoB, triglyceride/HDL ratio (target <1.5), and fasting insulin — don't judge on LDL-C alone.

Oxalate dumping — patients with prior high-oxalate diets (spinach, almonds) often get joint pain and skin rashes in month 1 as stored oxalates mobilize. Slow the transition.

Vitamin C — marginal on muscle-meat-only; eat fresh (not aged) meat and include liver weekly.

30 days vs. long-term — a 30-day trial is safe for most adults. Long-term (1+ year) needs annual labs: CMP, lipid panel with apoB, fasting insulin, A1c, ferritin, B12, vitamin D, RBC magnesium.

Run labs before you start and at 90 days.

Example: 180-lb male, 2,500 kcal carnivore day

Calorie input: 2,500 kcal (moderately active 180-lb male).

Protein: 2,500 × 0.30 / 4 = 188 g (≈ 1 g per lb bodyweight — stays within the Phinney protein ceiling for ketosis).

Fat: 2,500 × 0.70 / 9 = 194 g (fat fills the remaining calories — it is the energy lever, not protein).

Carbs: trace only (organ glycogen, ~5–10 g, negligible).

Practical plate: 2 lb (32 oz) ribeye + 4 eggs + 3 tbsp butter + 3–4 oz beef liver once a week + 5 g sodium + electrolytes. Or 2 lb 80/20 ground beef (~1,800 kcal) — close the 700 kcal gap with butter, tallow, or bone marrow (~100 kcal/tbsp).

Disclaimer: For guidance only; this does not replace diagnosis, treatment, or professional follow-up. Consult a licensed healthcare professional.

Frequently asked questions

What are the macros for the carnivore diet?

Standard carnivore macros are 30% protein / 70% fat / 0% carbohydrates. At 2,000 kcal that equals 150 g protein and 156 g fat per day. The ratios vary slightly by variant: the lion diet (ruminant meat, salt, water only) often skews fattier; nose-to-tail can include more protein from organs.

How much protein should I eat on carnivore?

Target 0.8–1.2 g protein per lb of bodyweight (1.8–2.6 g/kg). Above ~2 g/kg, excess amino acids feed gluconeogenesis and can suppress ketosis. A 180-lb man targets 145–215 g/day; a 130-lb woman, 105–155 g/day. Calculate your calorie target first, then let the 30% split do the math.

Do I need vitamin C on carnivore?

No supplemental vitamin C is required on a well-formulated carnivore diet. Fresh muscle meat contains 1–2 mg/100 g and beef liver around 23 mg/100 g. Vitamin C requirements also drop significantly without dietary glucose competing for GLUT-1 transporters. Eat fresh (not aged) meat and include liver weekly — that covers the margin.

Will the carnivore diet raise my cholesterol?

LDL-C goes up in most people, sometimes dramatically. About 1 in 3 are lean mass hyper-responders (Norwitz 2022) with LDL-C hitting 200–400 mg/dL. What matters more in the metabolic context: apoB (particle count), triglyceride/HDL ratio (target under 1.5), fasting insulin, and a CAC scan to image actual plaque. Don't make the call on LDL-C alone — work with a lipidologist who understands the LMHR phenotype.

What about constipation with no fiber?

Most people normalize within 4–6 weeks. Stool volume drops because there is almost no undigested residue — that is efficient absorption, not constipation. Real constipation (straining, hard stool, discomfort) usually means not enough fat or not enough salt. Bump fat to 75–80% of calories and sodium to 5 g/day. If it persists past 6 weeks, add magnesium citrate 400–600 mg at bedtime.

Should I eat liver on carnivore?

Yes — 3 to 4 oz of beef liver once a week. That single portion delivers ~800% RDA vitamin A, ~600% B12, ~30% iron, plus choline, copper, and folate. More than that risks vitamin A toxicity (chronic intake above ~10,000 IU/day retinol can be problematic), so do not go daily. If you hate liver, blend it into ground beef 1:4 — you will not taste it.

What is rabbit starvation and how do I avoid it?

Rabbit starvation (protein poisoning) occurs when you eat too much lean protein without enough fat — the liver cannot process the nitrogen load and you get nausea, fatigue, and diarrhea. It happens with lean cuts only (chicken breast, very lean venison). The fix: prioritize fatty cuts (ribeye, 80/20 ground beef, brisket, short ribs), add butter or tallow, and ensure fat covers at least 60–70% of your calories.

How do I run a 30-day carnivore trial?

Standard protocol: Week 0 — baseline labs (CMP, lipid panel with apoB, fasting insulin, A1c, ferritin, B12, vitamin D). Days 1–7 — ruminant meat, salt, water only; expect keto flu (fatigue, headache — it is the sodium gap, fix with 5 g/day salt). Days 8–21 — add eggs and fatty fish if tolerated; add 3–4 oz liver in week 2. Days 22–30 — maintain. Day 31 — repeat labs, log symptoms. Then reintroduce one food category at a time over 30 days to map triggers.

Is the carnivore diet safe long-term?

No long-term RCT evidence exists. The best available data is Lennerz et al. (Harvard, 2021) — a survey of 2,029 adults over 6–14 months, observational by design. Thirty-day carnivore is considered safe for most healthy adults. Long-term carnivore (1+ year) requires annual labs: CMP, lipid panel with apoB, fasting insulin, A1c, ferritin, B12, vitamin D, RBC magnesium, and a CAC scan if LDL stays elevated.

Sources & references

Methodology & trust

Editorial

Health calculator with its formula verified automatically against Lennerz BS et al. — Behavioral Characteristics and Self-Reported Health Status of 2,029 Adults Consuming a Carnivore Diet (Curr Dev Nutr, 2021), per our editorial policy and methodology.

Updates

Updated: June 2026. Parameters are verified periodically against the cited sources.

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Calculations run 100% in your browser. We do not store or transmit your data.

Limitations

Indicative results. For critical decisions, consult a professional.

📌 How to cite this calculator

Rodríguez, M. (2026). Carnivore Diet Macros Calculator. Hacé Cuentas. https://hacecuentas.com/en/macros-carnivore-diet

Content licensed under CC-BY 4.0 — reuse it citing the source with a link to Hacé Cuentas.

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