BMI Formula
Formula
BMI = weight (kg) ÷ height (m)²
Variables
- weight
- Body weight in kilograms
- height
- Height in meters
Worked example
A person weighing 70 kg who is 1.75 m tall: 1.75² = 3.0625, and 70 ÷ 3.0625 ≈ 22.9.
Related calculator: BMI Calculator
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Frequently asked questions
Does BMI measure body fat?
No. BMI is a ratio of weight to height and does not measure body composition.