CalcInfinityIdeal Weight Calculator
See your estimated ideal body weight based on your height and sex, compared across four established formulas.
Worked Example — Female, 5'4"
Frequently Asked Questions
A reference weight estimated from height and sex alone, originally developed for clinical uses like drug dosing — not a personalized target that accounts for your build, age, or muscle mass.
Common Mistakes to Avoid
- These formulas don't use age or current weight. All four are height-and-sex only, originally built for drug dosing — they won't adjust for your age, frame size, or muscle mass the way a personalized target would.
- A range is more honest than one number. The four formulas can differ by several kilograms for the same height — treat the spread as the real reference point, not just the average.
- This isn't a diagnosis of your current weight. Falling outside these formulas' output doesn't mean anything is wrong — they're population-average reference points, not individual health targets.
References
- Devine formula (1974)
- Hamwi formula (1964)
- Robinson & Miller formulas (1983)
Last reviewed July 2026
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