Ideal Weight Calculator
See what four of the most cited ideal body weight formulas say for your height, alongside the BMI-recommended healthy weight range.
Devine formula
70.5 kg
Robinson formula
68.9 kg
Miller formula
68.7 kg
Hamwi formula
72 kg
Healthy BMI range
56.7 - 76.3 kg
Average of the four formulas: 70 kg
How to Use the Ideal Weight Calculator
- Select your sex and enter your height (metric or imperial).
- Review the Devine, Robinson, Miller and Hamwi estimates.
- Compare them with the healthy weight range implied by a BMI of 18.5-24.9.
Formulas Used
Devine (men): 50 kg + 2.3 kg per inch over 5 ft | women: 45.5 kg + 2.3 kg per inch over 5 ft
Robinson (men): 52 kg + 1.9 kg per inch over 5 ft | women: 49 kg + 1.7 kg per inch over 5 ft
Miller (men): 56.2 kg + 1.41 kg per inch over 5 ft | women: 53.1 kg + 1.36 kg per inch over 5 ft
Hamwi (men): 48 kg + 2.7 kg per inch over 5 ft | women: 45.5 kg + 2.2 kg per inch over 5 ft
Frequently Asked Questions
Which ideal weight formula is best?
None is perfect. The Devine formula is the most widely used clinically, but all four were designed for drug dosing rather than aesthetics. Treat them as reference points together with the healthy BMI range.
Does frame size matter?
Yes. People with broader frames can sit above these numbers while perfectly healthy. The formulas assume a medium frame and do not account for muscle mass.
Why do results differ between formulas?
Each formula was derived from a different population study, so they disagree by a few kilograms. Looking at all four shows a realistic range instead of one false-precision number.
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