Compare four ideal-weight formulas for your height.
Devine formula: men 50 kg + 2.3 kg per inch over 5 ft; women 45.5 kg + 2.3 kg. For a 175 cm man the four formulas average 70 kg.
Ideal-weight formulas were created in the 1960s to 1980s, mostly to help doctors dose medicines, and they are still widely quoted. This calculator applies the Devine, Robinson, Miller and Hamwi formulas to your height and sex and shows them beside the healthy BMI range.
The formulas ignore muscle, frame size, age and ethnicity, so treat them as rough benchmarks, not goals. The Healthy Weight Calculator and BMI Calculator give more current, range-based guidance.
The calculator applies the standard published formulas step by step.
| Item | Value |
|---|---|
| Height | 175 cm (5 ft 8.9 in) |
| Healthy BMI range (18.5–24.9) | 56.7–76.3 kg |
| Formula | Ideal weight |
|---|---|
| Robinson (1983) | 68.9 kg (151.9 lb) |
| Miller (1983) | 68.7 kg (151.6 lb) |
| Devine (1974) | 70.5 kg (155.3 lb) |
| Hamwi (1964) | 72 kg (158.8 lb) |
| Case | Average of 4 formulas |
|---|---|
| Man, 165 cm | 61.9 kg (136.4 lb) |
| Man, 175 cm | 70 kg (154.4 lb) |
| Man, 185 cm | 78.2 kg (172.4 lb) |
| Woman, 160 cm | 53.9 kg (118.8 lb) |
| Woman, 170 cm | 61.3 kg (135.2 lb) |
An estimate of the weight expected for your height and sex based on historical formulas.
None is a measurement. Devine is the best known; Robinson, Miller and Hamwi give slightly different results.
They are still used in medicine for dosing, but for general health the BMI range and measures like waist size are more informative.
The formulas add weight per inch over 5 ft, so they become unreliable for very short heights. The calculator stops below about 4 ft 6 in.
Yes. People with larger frames or more muscle can be healthy well above these figures.
Use it only as a rough reference. A stable weight with good fitness and health markers matters more.
It uses the published formula: Devine (men) = 50 kg + 2.3 kg × (height in inches − 60) The full method and a worked example are shown on this page.
No. The calculator gives general estimates for information and education. It cannot diagnose or treat anything, so please speak to a doctor or qualified professional about your own health.
Yes. Choose centimetres or feet and inches for height, and kilograms, pounds or stone for weight; the results are converted for you.
No. Everything is calculated in your browser and nothing you enter is uploaded or saved.
