About the Ideal Weight Calculator
Compare ideal body weight estimates from four classic formulas (Robinson, Miller, Devine and Hamwi) with the healthy weight range based on BMI.
Key features
- Healthy weight range from BMI 18.5–24.9
- Four classic formulas: Robinson, Miller, Devine and Hamwi
- Metric or imperial input
- Results for men and women
- Private: nothing leaves your browser
- Results update as you type
What is a healthy weight for my height?
There's no single perfect weight, but there are well-established reference ranges. This calculator shows the BMI-based healthy range for your height alongside four classic ideal body weight formulas.
The formulas
All use height over 5 feet (in inches):
| 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 |
Example: man, 175 cm (5 ft 8.9 in)
| Method | Ideal weight |
|---|---|
| BMI 18.5–24.9 | 56.7 – 76.3 kg |
| Robinson | 68.9 kg |
| Miller | 68.7 kg |
| Devine | 70.5 kg |
| Hamwi | 72.0 kg |
Healthy range by height (BMI 18.5–24.9)
| Height | Healthy weight |
|---|---|
| 155 cm (5'1") | 44.4 – 59.8 kg |
| 165 cm (5'5") | 50.4 – 67.8 kg |
| 175 cm (5'9") | 56.7 – 76.3 kg |
| 185 cm (6'1") | 63.3 – 85.2 kg |
For general information only, not medical advice. A healthcare professional can help you set a target that suits your health.
Related calculators
Check your current BMI, measure body fat, or work out calorie needs.
How to use the Ideal Weight Calculator
- Enter your numbers in the fields above. Units and options can be changed at any time.
- The result updates instantly as you type; there's no calculate button to press.
- Check the breakdown under the main result for the details behind the number.
- Adjust the inputs to compare scenarios, for example a different rate or term.