BMI Calculator

Enter your height and weight to find your Body Mass Index and category.

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Free BMI calculator

Body Mass Index (BMI) estimates whether your weight is healthy for your height. Enter height in cm and weight in kg to get your BMI and category. Under 18.5 is underweight, 18.5–24.9 normal, 25–29.9 overweight, 30+ obese.

Frequently asked questions

How is BMI calculated?

BMI = weight (kg) ÷ height (m)². This tool does it for you from cm and kg.

What is a healthy BMI?

A BMI between 18.5 and 24.9 is generally considered healthy for adults.