Ideal Weight Calculator
Find your ideal body weight range using multiple established formulas including Devine, Robinson, and Hamwi.
Ideal Weight Calculator tool
Example
Input: Male, height 180 cm
Result: Average Ideal Weight 74.1 kg (Devine 75 kg, Robinson 72.6 kg, Miller 71.5 kg, Hamwi 77.3 kg)
180 cm is 70.9 in, or 10.9 in over 5 feet; Devine = 50 + 2.3 x 10.9 = 75 kg, and the four formulas average 74.1 kg.
Ideal Weight by Height (Average of Four Formulas)
| Height | Men | Women |
|---|---|---|
| 155 cm (5 ft 1 in) | 53.7 kg (50.8 - 57.6) | 50.2 kg (47.8 - 54.5) |
| 160 cm (5 ft 3 in) | 57.8 kg (56.1 - 60.4) | 53.9 kg (52.1 - 57.2) |
| 165 cm (5 ft 5 in) | 61.9 kg (61.4 - 63.2) | 57.7 kg (56.4 - 59.8) |
| 170 cm (5 ft 7 in) | 65.9 kg (65.2 - 66.7) | 61.4 kg (60.7 - 62.5) |
| 175 cm (5 ft 9 in) | 70.0 kg (68.7 - 72.0) | 65.1 kg (64.1 - 66.0) |
| 180 cm (5 ft 11 in) | 74.1 kg (71.5 - 77.3) | 68.8 kg (67.5 - 70.5) |
| 185 cm (6 ft 1 in) | 78.2 kg (74.3 - 82.7) | 72.5 kg (70.6 - 75.0) |
| 190 cm (6 ft 3 in) | 82.3 kg (77.1 - 88.0) | 76.3 kg (73.2 - 79.5) |
Average of Devine, Robinson, Miller and Hamwi, with the lowest and highest formula in brackets.
- Select your sex (male or female) as each formula differs by sex.
- Enter your height in centimeters (the formulas apply from 152 cm, or 5 feet, upward).
- View ideal weight estimates in kilograms from the Devine, Robinson, Miller, and Hamwi formulas.
- Compare the range across all four formulas to find a realistic target.
- Consider your body frame size and adjust the target by plus or minus 10% accordingly.
Ideal Body Weight Formulas Compared
Ideal body weight formulas give a target weight from your height and sex. For a man who is 180 cm tall, four common formulas give 71.5 to 77.3 kg, with an average of 74.1 kg. This calculator shows all four so you can see the spread, not just one number.
Each formula starts at a base weight for someone 5 feet (152.4 cm) tall. It then adds a set amount for each inch above that. The Devine formula, for example, gives men 50 kg plus 2.3 kg per inch. Robinson, Miller and Hamwi use different starting points and steps. That is why they agree closely at average heights and drift apart for very tall people. The table below shows the average and range for common heights.
The formulas were not made to tell healthy people what to weigh. Devine published his in 1974 to help dose medicines, and it is still used in hospitals for that. Treat the results as a rough reference point. They also leave a lot out. No formula here counts muscle, frame size, age or body fat. A strong person can be healthy well above these numbers. The formulas only apply from 152 cm (5 feet) upward, and the tool shows a note instead of a result below that.
For a wider range based on the same idea, the BMI Calculator shows the weights that give a BMI of 18.5 to 24.9 at your height. A doctor or dietitian can help you set a goal that fits your body and health.
Formula / How It Works
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