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Ideal Weight Calculator

This calculator estimates your ideal body weight using four widely recognized formulas: Robinson, Miller, Hamwi, and Devine. It also compares your current weight to the WHO-recommended healthy BMI range. Just enter your height and gender to see multiple predictions of your optimal weight.

Multiple Formula Ideal Weight Calculator

Input Fields
H
cm
If enabled, the result will update automatically when you change any value.

Ideal Weight Prediction Formulas

Formula
$$\begin{aligned} \text{Robinson (Male)} & = 52 + 1.9 \cdot h \\ \text{Robinson (Female)} & = 49 + 1.7 \cdot h \\ \text{Miller (Male)} & = 56.2 + 1.41 \cdot h \\ \text{Miller (Female)} & = 53.1 + 1.36 \cdot h \\ \text{Hamwi (Male)} & = 48.0 + 2.7 \cdot h \\ \text{Hamwi (Female)} & = 45.5 + 2.2 \cdot h \\ \text{Devine (Male)} & = 50.0 + 2.3 \cdot h \\ \text{Devine (Female)} & = 45.5 + 2.3 \cdot h \\ \text{WHO BMI Range} & = 18.5 \leq \text{BMI} \leq 25.0 \end{aligned}$$


Each of these formulas estimates ideal body weight based on gender and height (above 5 feet):

  • Robinson: Focuses on modern averages
  • Miller: Slightly more conservative approach
  • Hamwi: Popular among clinicians and dietitians
  • Devine: Originally used for drug dosing

The calculator also shows your healthy BMI weight range, allowing you to compare scientific and practical recommendations.

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BAI and BMI

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