Ideal Weight
Estimate ideal body weight based on height, using the Devine and Robinson formulas.
cm
Devine70.5 kg
Robinson68.9 kg
How it works
There is no single "ideal" weight, but several well-known formulas give a sensible target range based on your height. This calculator applies the classic Devine, Robinson, Miller and Hamwi equations and shows the spread.
The Devine formula, for example, starts from a base weight at 152 cm (about 50 kg for men, 45.5 kg for women) and adds a fixed amount for every centimetre above that. For a man of 180 cm it suggests roughly 75 kg. Because the formulas differ slightly, seeing them together gives a realistic band rather than one exact number.
Treat the result as a guide. It is based on height alone and does not account for muscle, frame size or age, so a fit, muscular person may sit above their "ideal" and still be perfectly healthy.
Frequently asked questions
Why do the formulas give different numbers?
Each was derived from different data and assumptions, so they disagree by a few kilograms. That is why a range is more honest than a single figure — aim somewhere within the band.
Does it account for muscle or frame size?
No. These formulas use only height and sex. A muscular athlete or someone with a large frame may healthily weigh more than the estimate, so use it alongside other measures.
Which formula should I trust?
Use the result as a reference range, not a medical target.