Ideal Weight Calculator
Enter sex and height to estimate ideal weight (kg) with the Devine formula and a healthy BMI range.
Input Data
Results
At a glance:Devine: men = 50 + 2.3×(height in inches − 60); women = 45.5 + 2.3×(height in inches − 60). The healthy range is BMI 18.5–24.9 at that height.
Formula
heightIn = heightCm ÷ 2.54.
idealKg = (men:50 / women:45.5) + 2.3×(heightIn − 60).
rangeLow = 18.5×(heightCm÷100)²; rangeHigh = 24.9×(heightCm÷100)².
How to Use
- Select sex and enter height (cm).
- Get ideal weight and the BMI 18.5–24.9 healthy range.
Case Studies
170cm male
Height in = 66.9; ideal = 50 + 2.3×6.9 ≈ 65.9 kg.
Healthy range ≈ 18.5×1.7² = 53.5 to 24.9×1.7² = 72.0 kg.
FAQ
What is Devine?
The Devine formula is a common empirical estimate of ideal body weight, originally for drug dosing and now used as a weight target reference.
Is ideal weight the same as healthy weight?
Not exactly; frame, muscle and age matter. The BMI 18.5–24.9 range is a closer general guide.
How does it differ from BMI?
BMI assesses your current status; this tool estimates a target weight — opposite directions that complement each other.
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References
Content reviewed by the Calculatorism editorial team. Results are for reference only; please refer to the relevant authorities for the official figures.