Lunia · Free tools
Ideal Weight Calculator
Compare historical reference formulas with the adult BMI reference range.
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How this calculator works
The calculator shows Devine, Robinson, Miller and Hamwi reference formulas above a height of 5 feet. It also converts the adult BMI screening interval of 18.5 to 24.9 into a weight range for your height.
A worked example
Height: 170 · Length unit: Centimetres · Sex coefficient used by the formula: Female coefficient
- Adult BMI reference range
- 53.5 to 72 kg
- Devine reference
- 61.4 kg
- Robinson reference
- 60.8 kg
- Miller reference
- 62.5 kg
- Hamwi reference
- 60.7 kg
These are illustrative inputs, not personal recommendations.
Common questions
Should I aim for the average of these formulas?
No. Averaging reference formulas does not create a personalised health target. A clinician can help interpret weight in the context of your history and needs.
How should I use the result?
There is no single ideal body weight. Historical formulas are not individual goals and do not describe muscle mass, health, ethnicity or pregnancy. Use these numbers only as context, not a target to pursue.
Sources & method references
- Robinson et al. (1983), historical ideal-body-weight formulaspubmed.ncbi.nlm.nih.gov (opens in a new tab)
- CDC adult BMI screening categoriescdc.gov (opens in a new tab)
Formula-based results are estimates, not individual medical advice.