Ideal Weight Calculator
Estimate ideal body weight (IBW) using multiple reference formulas. Informational only.
Informational only (not medical advice). “Ideal weight” formulas are references and may not apply to all body types. Privacy: runs locally in your browser. No inputs are stored or sent to a server.
How it works
This tool calculates “ideal body weight” (IBW) using several common reference formulas. Most of these formulas use a base weight at 5 ft (60 in) plus an increment per inch above 5 ft. If height is below 5 ft, they subtract per inch below 5 ft.
- Devine: Male 50.0 kg + 2.3 kg/in; Female 45.5 kg + 2.3 kg/in
- Robinson: Male 52.0 kg + 1.9 kg/in; Female 49.0 kg + 1.7 kg/in
- Miller: Male 56.2 kg + 1.41 kg/in; Female 53.1 kg + 1.36 kg/in
- Hamwi: Male 48.0 kg + 2.7 kg/in; Female 45.5 kg + 2.2 kg/in
Output is shown in kg and lb. Use it as a reference point, not a rule.
Examples
- Male, 175 cm → shows IBW estimates by formula
- Female, 5 ft 4 in → shows IBW estimates by formula
FAQ
- What does this ideal weight calculator do?
It estimates an ideal body weight range using several common reference formulas (Devine, Robinson, Miller, Hamwi). These are general references, not medical advice.
- Which formulas are included?
Devine, Robinson, Miller, and Hamwi. Results can differ because each uses different assumptions and was developed for different contexts.
- Is this the same as BMI?
No. BMI uses your actual weight and height to classify weight status. Ideal weight formulas output a reference weight based on height (and sex).
- Can I use centimeters or inches?
Yes. You can enter height in cm (metric) or feet/inches (imperial). The calculator converts internally.
- Is my data stored?
No. All calculations run locally in your browser. Inputs are not stored or sent to a server.