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Ideal Weight Calculator — Ideal Body Weight

Ideal body weight formulas estimate a healthy weight based on height and gender. Results vary across formulas; use the combined range as a guide.

There is no single 'ideal weight' — the healthiest weight for you depends on your height, body composition, frame size, age, and overall health. This calculator uses four well-known clinical formulas (Devine, Robinson, Miller, and Hamwi) and presents the full range so you can see where different formulas agree. We recommend focusing on the range rather than a single number, and pairing this calculator with a body-fat or BMI assessment for a more complete picture.

Your Details

How to Use This Calculator

  1. Enter your height in cm or feet/inches.
  2. Select your gender.
  3. Optionally enter your current weight for comparison.
  4. Click Calculate to see ideal weight estimates from four formulas plus the combined range.

Frequently Asked Questions

Methodology & Limitations

Formulas Used

**Devine (1974):** Men = 50 + 2.3 × (height_in − 60) kg; Women = 45.5 + 2.3 × (height_in − 60) kg. **Robinson (1983):** Men = 52 + 1.9 × (height_in − 60); Women = 49 + 1.7 × (height_in − 60). **Miller (1983):** Men = 56.2 + 1.41 × (height_in − 60); Women = 53.1 + 1.36 × (height_in − 60). **Hamwi (1964):** Men = 48 + 2.7 × (height_in − 60); Women = 45.5 + 2.2 × (height_in − 60).

Limitations

These formulas were developed for clinical dosing and do not account for muscle mass, frame size, or ethnicity. They tend to underestimate for taller individuals and overestimate for shorter individuals. Use them as a reference range, not an absolute target.

Sources & Citations

  1. Devine BJ. Gentamicin therapy. Drug Intell Clin Pharm. 1974;8:650-655.
  2. Robinson JD, et al. Determination of ideal body weight for drug dosage calculations. Am J Hosp Pharm. 1983;40(6):1016-1019.
Last updated: 2026-02-12Reviewed by: PhysiqueLogic Editorial Team

Medical Disclaimer: This calculator provides estimates based on published formulas and is not a substitute for professional medical advice. Always consult a qualified healthcare provider before making changes to your diet or exercise routine.

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