How to use the Ideal Weight Calculator
- Enter your sex and height.
- Press “Calculate” to see results from each formula and the healthy BMI range.
Formulas used
Each formula starts from a base weight at 5 feet (152.4 cm) and adds weight per inch above that:
- Devine (1974): men 50 kg + 2.3 kg/inch; women 45.5 kg + 2.3 kg/inch.
- Robinson (1983): men 52 kg + 1.9 kg/inch; women 49 kg + 1.7 kg/inch.
- Miller (1983): men 56.2 kg + 1.41 kg/inch; women 53.1 kg + 1.36 kg/inch.
- Hamwi (1964): men 48 kg + 2.7 kg/inch; women 45.5 kg + 2.2 kg/inch.
Use a range, not a single number
These formulas were developed mainly for medication dosing and do not consider body frame or muscle. The healthy BMI range (18.5–24.9) gives a broader, more practical target.
Frequently asked questions
Which formula is best?
None is clearly best. Looking at the range across formulas and the BMI range is more useful than any single result.
Does this work for very short people?
The formulas are designed for heights above 5 feet (152 cm). Below that, use the BMI range.