Ideal Weight Calculator
Estimate your ideal body weight with four classic formulas (Robinson, Miller, Devine, Hamwi) and the healthy BMI range.
Four ideal weight formulas
"Ideal body weight" formulas were created by doctors to dose medicines, not as aesthetic targets. They all start from a base weight at 5 feet (152.4 cm) and add a fixed amount for every inch above that.
| Formula | Men | Women |
|---|---|---|
| Robinson (1983) | 52 kg + 1.9 kg/in | 49 kg + 1.7 kg/in |
| Miller (1983) | 56.2 kg + 1.41 kg/in | 53.1 kg + 1.36 kg/in |
| Devine (1974) | 50 kg + 2.3 kg/in | 45.5 kg + 2.3 kg/in |
| Hamwi (1964) | 48 kg + 2.7 kg/in | 45.5 kg + 2.2 kg/in |
For a man who is 5 ft 10 in (10 inches over 5 ft), Devine gives 50 + 23 = 73 kg (161 lb), while Miller gives 70.3 kg. Their average is a sensible single number.
A range is better than a number
Healthy bodies vary in frame size, muscle and fat distribution, so no single number fits everyone. The calculator also shows the weight range that gives a BMI of 18.5–24.9 at your height, which is the range most health organizations consider healthy for adults.
For people under 5 feet the formulas are not designed to work well, and for athletes with more muscle a heavier weight is usually perfectly healthy.
Frequently asked questions
Which ideal weight formula is best?
None is clearly best. Devine is the most widely used in medicine; Robinson and Miller were later revisions. Using the average and the healthy BMI range gives a reasonable target.
Does frame size affect ideal weight?
Yes. A common adjustment is to subtract 10% for a small frame and add 10% for a large frame.
Is ideal weight the same as healthy weight?
Not exactly. Any weight within the healthy BMI range can be healthy, especially when combined with good fitness, waist size and blood markers.
Last reviewed Oct 20, 2026. Results are estimates; check important decisions with a qualified professional.