Ideal Weight Calculator

Estimate a healthy body weight for your height and sex using four classic clinical formulas, plus the healthy BMI range.

Devine
Robinson
Miller
Hamwi

Frequently asked questions

Why are there four different formulas?

Ideal body weight formulas were developed at different times for clinical use, mostly to dose medication. Devine (1974) is the most cited, with Robinson, Miller and Hamwi as refinements. They give slightly different numbers, so seeing all four shows a sensible range.

Is ideal weight the same as a healthy weight?

Not exactly. These formulas estimate an average healthy weight for a height but ignore muscle, frame size and body composition. The healthy BMI range shown alongside is a broader, widely used guide.

Why does it only ask for height and sex?

These classic formulas depend only on height and sex by design. For a fuller picture, combine the result with body-fat percentage and how you actually look and feel.