Lorentz & Devine Ideal Weight Formula Calculator
Reference values in health science come from large population studies (NHANES, WHO). They provide a framework for interpreting your results, but your personal context matters most. Lorentz: height−100−(age−18)/8. Devine: 50+2.3×inches over 5 feet. These values are current as of 2026 and reviewed periodically to keep you informed.
When to use this calculator
- Technical calculations for ideal weight using Lorentz and Devine formulas
- Students and professionals in health sciences and nutrition
- Validate theoretical results before applying in practice
- Teaching and learning about weight-estimation formulas
- Quick reference for health and fitness projects
Calculation Example
- Typical values
- Result
How it works
1 min readReference values in health come from large-scale population studies (NHANES, WHO, CDC). They vary by age, sex, ethnicity, and region. They are guidelines; your personal medical history always takes precedence.
How It's Calculated
Lorentz formula: height−100−(age−18)/8. Devine formula: 50+2.3×inches over 5 feet.
This calculator applies the formula with your input values, checking for typical ranges and alerting you to values outside expected norms.
Normal Reference Values for Adults
| Parameter | Normal Range |
|---|---|
| Blood Pressure | <120/80 mmHg |
| Resting Heart Rate | 60-100 bpm |
| Body Temperature | 36.1-37.2°C |
| Blood Oxygen Saturation (SpO2) | 95-100% |
| Fasting Blood Glucose | 70-100 mg/dL |
| HbA1c | <5.7% |
| Total Cholesterol | <200 mg/dL |
| LDL Cholesterol | <100 mg/dL |
| HDL Cholesterol | >40 (M) / >50 (F) |
Final Notes
This calculation is a guideline only. For critical decisions (medical, financial, or legal), consult with a qualified professional. Values and formulas are current as of 2026 and reviewed periodically.
Frequently asked questions
What is the Lorentz formula for ideal weight?
The Lorentz formula calculates ideal weight as: height (cm) − 100 − (age − 18)/8. It's a simple method accounting for both height and age.
How accurate is the Devine formula?
The Devine formula is an estimate based on population averages. It's useful as a reference but shouldn't replace professional medical advice.
Do these formulas work differently for men and women?
Both formulas apply generally to adults, though individual variation exists. Consult a healthcare provider for personalized assessment.
What are the sources for these formulas?
These formulas come from international health organizations: WHO, NIH, and IOM, based on extensive population research.
Are these values updated?
Yes. Our formulas and reference values are current as of 2026 and reviewed periodically.
Is this calculator free?
Yes. All our calculators are completely free with no registration required.
How accurate are the results?
These are guideline estimates using validated international formulas. For medical decisions, always consult with a healthcare professional.
Do you save my data?
No. All calculations happen in your browser. We don't send any data to external servers.