Multiple formula comparison
Shows results from four established formulas (Hamwi, Devine, Robinson, Miller) so you can see the full healthy range rather than a single arbitrary number.
Ideal Weight Calculator
Estimate your healthy target weight using Devine, Robinson, Miller, and Hamwi formulas. Compare Metric and Imperial units for men and women.
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How to use Ideal Weight Calculator
- 1
Select your biological sex and preferred unit system.
- 2
Enter your height in centimeters or feet and inches.
- 3
Read your ideal weight range from multiple established formulas.
- 4
Compare the results to understand the range of healthy weight targets.
Why use this tool?
Personalized to height and sex
Each formula accounts for biological sex differences in muscle and bone density to give a sex-specific ideal weight estimate.
Context, not prescription
Displays results alongside BMI context to help you understand whether your current weight is within the healthy range for your stature.
Frequently asked questions
Which ideal weight formula is the most accurate?
No single formula is universally most accurate — they were each developed for different clinical populations. The Devine formula is widely used in clinical pharmacology. For general fitness, viewing the range across all formulas gives a more realistic target than any single figure.
Is ideal weight the same as healthy weight?
Ideal weight formulas provide an estimate based on height and sex. Healthy weight also factors in muscle mass, bone density, age, and ethnic background. A person can be above the "ideal" weight by formula yet be in excellent health with high muscle mass.
Which medical formulas are used to calculate ideal weight?
The calculator displays estimates across classic clinical formulas including Devine, Robinson, Miller, and Hamwi equations alongside BMI healthy ranges.
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