Ideal Weight Calculator
Compare ideal weight estimates from four scientific formulas and the healthy BMI range for your height.
lbs
About the Formulas
Hamwi (1964) — Originally developed for insulin dosing. Males: 106 lbs for 5 ft + 6 lbs per inch over 5 ft. Females: 100 lbs + 5 lbs/inch.
Devine (1974) — Widely used in pharmacology and ICU settings. Males: 50 kg + 2.3 kg/inch over 5 ft. Females: 45.5 kg + 2.3 kg/inch.
Robinson (1983) — Derived from Metropolitan Life tables. Males: 52 kg + 1.9 kg/inch over 5 ft. Females: 49 kg + 1.7 kg/inch.
Miller (1983) — Another Met Life derivation. Males: 56.2 kg + 1.41 kg/inch over 5 ft. Females: 53.1 kg + 1.36 kg/inch.
How to use
- Select your sex and preferred units (Imperial or Metric).
- Enter your height.
- Optionally enter your current weight to see your current BMI alongside the ideal range.
- Click Calculate to see results from all four formulas.
- The green healthy BMI range (18.5–24.9) is the most widely accepted guideline.
- These formulas were designed for clinical use — use them as a general reference only.