Ideal Weight Calculator

Ideal body weight (IBW) is a clinical estimate of how much a person should weigh based primarily on height and sex. It was originally developed for drug dosing calculations in medicine but has become widely used in fitness and health assessments. Multiple formulas exist, each producing slightly different results.

The Devine formula (1974) is the most commonly used in medicine. The Robinson formula (1983) produces slightly different results and is considered more balanced. The Miller formula (1983) tends to give lower ideal weights. The Hamwi formula (1964) is the oldest and simplest. Comparing all four gives you a range rather than a single number.

These formulas only consider height and sex, ignoring important factors like age, body frame size, muscle mass, and ethnicity. A large-framed, muscular person will naturally weigh more than a small-framed person of the same height without being overweight. Use these calculations as general guidelines, not strict targets.

Your true ideal weight is the weight at which you feel healthy, energetic, and can maintain sustainable habits. Consider body fat percentage, waist circumference, blood pressure, blood sugar, and cholesterol levels alongside weight. A weight you can maintain without extreme restriction is more important than matching a formula.