Miller Formula Calculator
The Miller formula (1983) — 56.2 kg (men) or 53.1 kg (women) at 5 ft, plus a shallow 1.41 or 1.36 kg per inch — is the most conservative of the four at tall heights. It is pre-selected below; enter your height and sex.
Find Your Ideal Weight
Required: the ideal-weight formulas use biological sex (male or female) as a variable, so the estimate can’t be calculated without it.
Age adjusts the healthy BMI reference range for adults 65+ (senior guidelines use BMI 23–28).
Enter your height in centimeters (e.g., 170 cm)
Valid range: 152–214 cm (approx. 5 ft – 7 ft)
The ±10% frame adjustment is applied to all four formulas. Clinical medication dosing uses the unadjusted medium-frame value.
Women (>165 cm): Small <15.9 cm · Medium 15.9–16.5 cm · Large >16.5 cm
Valid range: 10–30 cm
Displays the average across all four major clinical formulas for a balanced target.
*This calculator is for informational purposes only. Please consult a healthcare professional before making any health decisions. See our medical disclaimer for more information.
Calculations are powered by the Devine, Robinson, Miller & Hamwi IBW Equations, four peer-reviewed clinical formulas for ideal body weight validated for adult assessment (Pai & Paloucek, Ann Pharmacother, 2000).
Quick Answer
The Miller Formula
The Miller formula (1983) is 56.2 kg (men) or 53.1 kg (women) at 5 ft, plus a shallow 1.41 kg or 1.36 kg per inch above that. For a 5 ft 10 in man that is 70.3 kg (155 lb) — the lowest of the four. Enter your height above with Miller pre-selected.
How the Miller Calculation Works
Miller begins from the highest base of the four — 56.2 kg for men, 53.1 kg for women at 5 ft — but adds the smallest per-inch increment: 1.41 kg for men and 1.36 kg for women. A 6-foot man is 12 inches over the base, so Miller gives 56.2 + (1.41 × 12) = 73.1 kg; a 5 ft 4 in woman is four inches over, giving 53.1 + (1.36 × 4) = 58.5 kg. The high base plus the shallow slope is what makes Miller the largest figure at short heights and the smallest at tall ones. As with every ideal-weight formula, it uses only height and sex, so read it with the healthy BMI range the calculator shows.
Miller Against the Other Formulas
For tall and average-height people, Miller is the useful lower-bound reference — the most conservative of the four — while Hamwi marks the upper bound and Devine and Robinson sit between. If you want to bracket a realistic range, pair Miller (the floor) with Hamwi (the ceiling) and take the average as your working anchor. To see how much lean tissue sits under your weight, use the Lean Body Mass Calculator, and to place a Miller figure on the standard scale, the BMI Calculator shows the band for your height. Compare all four in the Ideal Weight Calculator.
Miller, D.R. et al. (1983), described in Pai & Paloucek, 2000. The formula is a population-based reference, not medical advice, and does not account for muscle mass or individual health conditions.
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