Ideal Weight Calculator
Find your ideal body weight based on height and sex. We show results from three medically used formulas plus the healthy BMI range, so you get a realistic target range instead of a single number.
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Save ⟶How to use the Ideal Weight Calculator
- 1Enter sex in the form on the left.
- 2Fill in the remaining fields — the result updates automatically as you type.
- 3Review the highlighted result and the supporting breakdown on the right.
- 4Use Copy, Share or Print to save or send your result.
Where ideal weight formulas come from
The Devine formula (1974) was created for drug dosing, not aesthetics, and later formulas like Robinson and Hamwi refined it. All assume a base weight at five feet and add per-inch increments, which is why they agree closely for average heights and diverge at the extremes.
Treat any 'ideal weight' as the center of a range. Frame size, muscle mass and age legitimately shift a healthy weight by several kilograms in either direction — the BMI range shown is usually the more useful target band.
Frequently Asked Questions
▸Which ideal weight formula is best?
None is definitive — they were built for clinical dosing. The healthy BMI range (18.5–24.9) is the most evidence-based band for health outcomes.
▸Does age affect ideal weight?
Slightly — modestly higher BMI in older adults (up to ~27) is associated with similar or better outcomes in some studies, partly reflecting muscle preservation.