About the Ideal Body Weight Calculator
What is the Ideal Body Weight Calculator?
There is no single perfect weight, but clinical formulas give a useful target. This ideal body weight calculator averages the four best-known formulas and shows each one.
It also shows the weight range for a healthy BMI under the Asian Indian cut-offs, which is often the more practical goal.
How to use the Ideal Body Weight Calculator
- Sex (sample: Male)
- Height (cm) (sample: 170)
- Press Calculate Ideal Weight (results also refresh as you type). The result card shows the Ideal Body Weight, along with Devine (used for drug dosing), Robinson, Miller and Hamwi.
Formula used
Devine: Men 50 kg + 2.3 kg per inch over 5 ft; Women 45.5 kg + 2.3 kg per inch over 5 ft
- Robinson = men 52 + 1.9, women 49 + 1.7 per inch
- Miller = men 56.2 + 1.41, women 53.1 + 1.36 per inch
- Hamwi = men 48 + 2.7, women 45.5 + 2.2 per inch
The formulas were designed for heights over 5 feet (152 cm).
Worked example
These are the sample values already filled in the calculator above, and the result it returns for them:
| Input | Sample value |
|---|---|
| Sex | Male |
| Height (cm) | 170 |
| Result | Value |
|---|---|
| Ideal Body Weight | 65.9 kg |
| Devine (used for drug dosing) | 65.9 kg |
| Robinson | 65.2 kg |
| Miller | 66 kg |
| Hamwi | 66.7 kg |
| Healthy BMI range (Asian Indian 18.5–22.9) | 53.5 – 66.2 kg |
Tips for using the Ideal Body Weight Calculator
- Treat the result as a guide; body frame and muscle mass vary.
- The Devine formula is the one doctors use for calculating some medicine doses.