Ideal Weight Calculator
Computes ideal body weight (IBW) from height, gender and age using the four most-cited clinical formulas side by side, along with the healthy BMI weight range, for a rounded picture of a sensible target weight.
TheCalculators — Ideal Weight Calculator
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Ideal Body Weight (Devine)
75.0 kg (165 lb)
average of 4 formulas: 74.1 kg (163 lb) · healthy BMI range 59.9 – 81.0 kg
- Height
- 180.0 cm
- Gender
- Male
- Devine (1974)
- 75.0 kg (165 lb)
- Robinson (1983)
- 72.6 kg (160 lb)
- Miller (1983)
- 71.5 kg (158 lb)
- Hamwi (1964)
- 77.3 kg (171 lb)
- Healthy BMI range (18.5–25)
- 59.9 – 81.0 kg (132 – 179 lb)
Ideal weight by formula
Formulas apply to adults over 5 ft; taller people carry proportionally more lean mass than they assume.
IBW was designed for medication dosing, not aesthetics — body composition and fitness matter more than a single target number. Estimates for informational purposes only — not medical advice.
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Formula
Devine: 50 kg (male) / 45.5 kg (female) + 2.3 kg per inch over 5 ft · Robinson: 52 / 49 + 1.9 / 1.7 · Miller: 56.2 / 53.1 + 1.41 / 1.36 · Hamwi: 48 / 45.5 + 2.7 / 2.2
- • Convert height to total inches and subtract 60 (inches over 5 ft).
- • Apply the chosen formula: base weight + per-inch increment × inches over 5 ft.
- • Compare against the healthy BMI weight range (18.5–25 × height in m²).
Pro tips
- • The four formulas can disagree by 5+ kg — treat the spread as the honest range.
- • Weight targets should flex with muscle mass: lifters can be "overweight" by IBW and perfectly healthy.
- • Use the healthy BMI band for a range-based goal instead of a single number.
FAQ
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