Ideal weight defines a body mass associated with reduced health risk. Multiple evidence-based formulas estimate this value using height and gender. Understanding their assumptions clarifies why results differ.
This calculator applies Devine, Hamwi, Robinson, and Miller equations. You choose gender and enter height in centimetres. Outputs refresh automatically, offering four side-by-side targets for comparison.
Use results to inform nutrition plans, discuss goals with healthcare providers, or track progress alongside body-composition measurements.
This calculator offers informational estimates, not medical advice.
Each formula derives from population studies and linear adjustments above a base height.
| Formula | Base | Per inch > 5 ft |
|---|---|---|
| Devine | Male 50 kg · Female 45.5 kg | 2.3 kg |
| Hamwi | Male 48 kg · Female 45.5 kg | 2.7 kg / 2.2 kg |
| Robinson | Male 52 kg · Female 49 kg | 1.9 kg / 1.7 kg |
| Miller | Male 56.2 kg · Female 53.1 kg | 1.41 kg / 1.36 kg |
Formulas share the same linear pattern but differ in constants.
Ideal = base_weight + (inches_above_5ft × increment).
Female, 170 cm (6.93 in above) → Devine 45.5 + (6.93 × 2.3) = 61.4 kg.
Values indicate weight ranges rather than strict targets; consider muscle mass and bone density.
Estimate ideal weight quickly.
Frequently asked questions clarify practical usage and privacy.
No single equation fits everyone; use the range as a guideline.
Inputs remain in your browser; nothing transmits to servers.
No. Paediatric growth charts provide more appropriate guidance.
Update values when height stabilises or goals change.
BMI offers population insights but ignores body composition; use both metrics thoughtfully.