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BMI Calculator

Find your Body Mass Index and healthy weight category.

Your BMI
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How BMI is calculated

BMI = weight (kg) ÷ height (m)². Categories: below 18.5 underweight, 18.5–24.9 normal, 25–29.9 overweight, 30 and above obese. BMI is a general guide and does not account for muscle mass.

Frequently asked questions

How is BMI calculated?

BMI = weight in kilograms ÷ (height in meters squared). For example, 70 kg and 1.75 m gives 22.9.

What is a healthy BMI range?

A BMI between 18.5 and 24.9 is considered normal.