Ideal Weight Calculator
Calculate your ideal weight using different validated scientific formulas.
Average ideal weight
— kg
Devine
—
kg
Robinson
—
kg
Miller
—
kg
Healthy range (BMI 18.5–24.9)
— – — kg
What is ideal weight?
Ideal weight is an estimate of the weight associated with good health for a given height and sex. It is a reference range rather than an exact target, and should be interpreted alongside body composition, muscle mass and other health indicators.
How is it calculated?
There is no single universally accepted formula for calculating ideal body weight. The three equations most commonly used in medical literature are the Devine formula (1974), originally developed for drug dosing and the most frequently cited in clinical contexts; the Robinson formula (1983), an empirical adjustment of Devine’s; and the Miller formula (1983), which tends to yield more conservative values. This calculator shows the average of the three results because ideal weight is a range, not a single value.
Formula
Devine — Men: 50 kg + 2.3 kg × (height in inches − 60)Devine — Women: 45.5 kg + 2.3 kg × (height in inches − 60)Robinson — Men: 52 kg + 1.9 kg × (height in inches − 60)Robinson — Women: 49 kg + 1.7 kg × (height in inches − 60)Miller — Men: 56.2 kg + 1.41 kg × (height in inches − 60)Miller — Women: 53.1 kg + 1.36 kg × (height in inches − 60)⚠️ Limitations
The concept of 'ideal weight' has important limitations: it does not account for body composition, muscle mass, age, or fat distribution. Two people of the same height can have very different healthy weights. Use it as a general reference, not as a clinical target.