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
When to use this tool
This tool is designed for quick, practical tasks such as everyday calculations, data formatting, or simple conversions. It is best used when you need fast results without installing software or using complex tools.
When to use
- Quick checks or one-time calculations
- Validating or converting data before using it elsewhere
- Simple tasks that do not require advanced software
When not to use
- Critical financial, legal, or medical decisions
- Large-scale or automated processing
- Situations requiring guaranteed precision beyond basic validation
Always review results before using them in important contexts.
About this tool
This tool helps you perform quick utility operations directly in your browser. It runs entirely in your browser without sending data to a server.
You can use this tool when handling simple tasks without installing additional software. The results should be interpreted as a processed output based on your input data.
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.