Ideal Weight Formulas Compared: Hamwi, Devine, Robinson, Miller
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Hamwi Formula (1964)
Men: 48 kg + 2.7 kg for each inch over 5 feet. Women: 45.5 kg + 2.2 kg for each inch over 5 feet. Originally developed by Dr. Hamwi for determining calorie needs in diabetic patients. It’s the most widely used formula in nutrition clinics and tends to give slightly higher values than others.
Devine Formula (1974)
Men: 50 kg + 2.3 kg per inch over 5 feet. Women: 45.5 kg + 2.3 kg per inch over 5 feet. Created for pharmacokinetic drug dosing (calculating medication doses based on body weight). It remains the most referenced formula in clinical literature, particularly for BMI-adjusted medications.
Robinson Formula (1983)
Men: 52 kg + 1.9 kg per inch over 5 feet. Women: 49 kg + 1.7 kg per inch over 5 feet. Gives slightly lower values than Devine, particularly for taller individuals. Developed as a refinement of Devine for general health applications.
Miller Formula (1983)
Men: 56.2 kg + 1.41 kg per inch over 5 feet. Women: 53.1 kg + 1.36 kg per inch over 5 feet. Gives the highest base value with the lowest per-inch increment. Often produces the lowest final result for shorter heights but converges with other formulas at average heights.
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Open Ideal Weight Calculator to see Hamwi, Devine, Robinson, and Miller results side by side.