Ideal Body Weight Calculator
Compare Devine, Robinson and Miller formulas.
Enter your values
ⓘ Live results
Results
- Devine formula
- 73.2 kg
- Robinson formula
- 71.1 kg
- Miller formula
- 70.4 kg
- Average of three
- 71.6 kg
Quick answer
Ideal body weight formulas estimate a reference weight from height, with results varying slightly by formula.
Devine: 50 + 2.3 kg per inch over 5 ft (men); 45.5 + 2.3 (women)
How to use the Ideal Body Weight Calculator
- 1Enter sex and height.
- 2Each formula adds a fixed amount per inch over 5 feet to a base weight.
- 3These are population averages, not personalised targets — body composition and frame size matter too.
Worked example
Using the values the calculator loads with:
Inputs
- SexMale
- Height178 cm
Results
- Devine formula73.2 kg
- Robinson formula71.1 kg
- Miller formula70.4 kg
- Average of three71.6 kg
Frequently asked questions
Which formula is best?
None is definitively best; clinicians often use Devine for drug dosing calculations.
Should I aim for this exact weight?
No — treat it as a reference range, not a strict goal.
About this calculator
- Built and reviewed by James Whitfield · How we build and test calculators
- Report an error
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.