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BMI Calculator

Calculate your body mass index (BMI) with metric or imperial units.

Height (cm)

Weight (kg)

Your BMI

24.2

Healthy

Frequently asked questions

BMI = weight (kg) ÷ height (m)². Our calculator supports both metric and imperial units automatically.

BMI is a population-level screening tool, not a diagnosis. Athletes with high muscle mass may register as overweight despite low body fat.

The WHO defines healthy as 18.5–24.9, overweight as 25–29.9, and obese as 30+. Ranges differ slightly for Asian populations.

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Body mass index is a useful starting point, but waist-to-height ratio and body fat percentage tell a fuller story.

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