This calculator provides real-time estimates of your ideal body weight using four clinically validated formulas—Devine, Hamwi, Robinson, and Miller. Simply input your gender, frame size, and measurements in your preferred units to see personalized weight targets, healthy ranges, and visual feedback to guide nutritional planning and fitness goals.
| Formula | Ideal (kg) | Range (kg) | Deviation | Visual |
|---|
Devine Formula: Established by Dr. Ben J. Devine in 1974 to adjust drug dosing based on ideal body weight. It sets a baseline weight of 50 kg for males and 45.5 kg for females at 5 ft, then adds 2.3 kg per additional inch of height.
Hamwi Formula: Developed by Dr. William Hamwi in 1964 for nutritional assessment. It recommends 48 kg for men and 45.5 kg for women at 5 ft, with a 2.7 kg (men) or 2.2 kg (women) increment per inch beyond.
Robinson Formula: Introduced in 1983 by Robinson et al. as a refinement to Devine, offering slightly lower target weights (52 + 1.9 kg/in for men; 49 + 1.7 kg/in for women) that account for modern body composition trends.
Miller Formula: Proposed by Dr. Ross Miller in 1983, tailored for athletic populations. It starts at higher base values (56.2 kg for men; 53.1 kg for women) and uses smaller increments (1.41/1.36 kg per inch) to reflect greater muscle mass.