Calculate ideal body weight using five different medical formulas: Devine, Robinson, Miller, Hamwi, and BMI-based. Results in kg and lbs simultaneously.
Open Ideal Weight Calculator → free, no sign-inIdeal body weight is a contested concept in medicine — different formulas produce different results, and none of them is definitively right for every individual. The Ideal Weight Calculator shows you the results from five different recognised formulas (Devine, Robinson, Miller, Hamwi, and BMI-based) side by side, so you can see the range rather than being given a single number as if it were a fact.
Anyone curious about their ideal weight range, healthcare students learning about the different assessment methods, or anyone who wants to understand why different sources give different numbers for the same height.
No tutorials. No learning curve. Open it and get started.
No server uploads. Shows all five formulas' results simultaneously — so you see the spread rather than a single potentially misleading number.
Completely free. No trial period. No premium tier for basic functionality. No account required. Use it as often as you need.
One job, done well. Ideal Weight Calculator was built to solve a specific problem cleanly. No feature bloat, no ads, no distractions.
Which formula is most accurate?
None is definitively more accurate — different formulas suit different populations. The range across all five gives a more realistic picture than any single number.
Why do the formulas give different results?
Each was developed from different population studies with different methodologies.
Is ideal weight the same as healthy weight?
Ideal weight formulas are guides, not health standards. Individual health depends on many factors beyond weight.
Can I use this for children?
These formulas are designed for adults — different references are used for children.
Should I aim for the middle of the range?
Discuss specific weight goals with your healthcare provider.
Free. Instant. No sign-in. Open it and get the job done.
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