Ideal Weight
Ideal weight by Robinson / Miller / Hamwi / Devine formulas (kg).
How it works
Robinson (height h in inches): male = 52 + 1.9×(h−60) lb, female = 49 + 1.7×(h−60) lb; converted to kg. Miller/Hamwi/Devine use different coefficients.
Ideal weight has several empirical formulas with slightly different results; they are references, not health standards. This tool computes Robinson, Miller, Hamwi and Devine.
FAQ
Which ideal-weight formula is most accurate?
None is definitive; all four are empirical estimates differing ~2–5 kg. Judge together with BMI and body fat.
Worked example
Male, 175 cm, Devine formula: height in inches = 175 ÷ 2.54 ≈ 68.9; ideal weight = 50 + 2.3 × (68.9 − 60) ≈ 70.5 kg.
For a woman of the same height: 45.5 + 2.3 × 8.9 ≈ 66.0 kg. This is a single-point estimate; healthy ranges are wider.
Notes and limitations
The formula comes from mid-century insurance tables and considers only height — not frame, muscle or age. Treat it as a reference midpoint, not a target you must hit. A BMI healthy range plus waist circumference is more practical for personal goals.