Ideal Weight Calculator

This tool uses four classic formulas based on height and sex. Each defines a baseline weight for 5 feet (152.4 cm) and adds a fixed amount per inch above that. They were originally created for medication dosing, so they're estimates of a healthy reference weight, not strict targets.

Devine (1974), men: 50 kg + 2.3 kg per inch over 5 ft; women: 45.5 kg + 2.3 kg/in. Robinson (1983): men 52 + 1.9 kg/in, women 49 + 1.7 kg/in. Miller (1983): men 56.2 + 1.41 kg/in, women 53.1 + 1.36 kg/in. Hamwi (1964): men 48 + 2.7 kg/in, women 45.5 + 2.2 kg/in.

No single formula is definitive — they were derived for clinical dosing, not body composition. The Robinson and Miller formulas tend to give slightly lower values than Devine and Hamwi. Showing all four gives you a realistic range rather than one number.

Enter your height and sex above to see four estimates and their average. A healthy weight is a range, not a single value — body composition, muscle mass, and frame size all matter. Cross-check with a BMI calculator for a complementary view.

Not exactly. Ideal body weight formulas predate modern body-composition science and don't account for muscle, frame, or body fat. Use them alongside BMI and body fat percentage, and treat the result as a reference point rather than a goal.