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Ideal Weight Calculator

Devine, Robinson, and Miller formulas for ideal body weight — side by side.

Inputs

120220

Result

Average ideal weight
69.4 kg
mean of 3 formulas
  • Devine (1974)most clinically used70.5 kg
  • Robinson (1983)68.9 kg
  • Miller (1983)often gives the highest figure68.7 kg
  • Range across formulas68.7 kg – 70.5 kg
  • Height175.0 cm

How to use this calculator

  • Pick your sex (the formulas split men/women differently).
  • Enter your height in cm or inches.
  • Compare the three formulas — pick the one your doctor uses, or the average as a midpoint.

About this tool

"Ideal weight" formulas are old clinical estimates designed for medication dosing — not modern definitions of healthy weight. Three classic formulas (Devine, Robinson, Miller) give different answers for the same height because they were calibrated against different populations and goals. Devine (1974) is the most widely used in pharmacy. Robinson tends to skew higher; Miller higher still. None of them account for muscle mass or body composition — see the BMI Calculator for a more contemporary screen, or the Body Fat Calculator for a body-composition view.

Frequently asked

None — they're estimates calibrated decades ago. Devine is most widely used in clinical settings. Modern guidance prefers BMI 18.5–24.9 for the same height as a healthier benchmark.

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