Ideal Body Weight & Formula Comparison Calculator
Compute ideal weight targets using standard medical formulas (Devine, Robinson, Miller, Hamwi), WHO BMI ranges, and skeletal frame size adjustments
Total height
Average Medical Ideal Weight Range
154.2 lbs – 166.5 lbs
Devine Formula Target: 161.4 lbs (73.2 kg)
Consensus across Devine, Robinson, Miller & Hamwi clinical equations
Devine Formula (1974)
161.4 lbs
Standard clinical dosage baseline
Robinson Formula (1983)
156.8 lbs
Refined regression model
Miller Formula (1983)
158.5 lbs
Alternative clinical standard
Hamwi Formula (1964)
166.0 lbs
Traditional dietary benchmark
World Health Organization (WHO) Healthy BMI Range (18.5 – 24.9)
Linked to height input above
WHO Healthy Weight Span
136.4 lbs – 183.5 lbs
BMI Span: 18.5 to 24.9 kg/m²
Normal weight classification zone for given height
Minimum Healthy Weight (BMI 18.5)
136.4 lbs
Lower threshold boundary
Maximum Healthy Weight (BMI 24.9)
183.5 lbs
Upper threshold boundary
Median Healthy Weight (BMI 21.7)
159.9 lbs
Midpoint normal weight
Clinical Classification
Normal Weight
Lowest all-cause mortality risk
Wrist Circumference Frame Size Adjustment
Measured below ulnar/radial styloid process
Adjusted Frame-Size Ideal Weight
161.4 lbs (Medium Frame)
Frame Adjustment: ±0% (Medium Build)
Small frame reduces baseline target by ~10%; Large frame increases by ~10%
Detected Frame Size
Medium Frame
Based on height-to-wrist ratio
Frame Adjusted Weight
161.4 lbs
Devine baseline adjusted for bone structure
Small Frame Target (-10%)
145.3 lbs
Narrow bone structure build
Large Frame Target (+10%)
177.5 lbs
Robust bone structure build