BMI Calculator

Calculate Body Mass Index (BMI) from height and weight with interpretation.

Calculate your Body Mass Index (BMI) free online — just enter your weight and height to get your BMI and weight category (underweight / normal / overweight / obese) by Asian criteria.

Weight (kg)Height (cm)

Your BMI

22.9

Normal

How to use

Enter weight (kg) and height (cm) to get your BMI and weight category.

Enter your weight in kilograms
Enter your height in centimeters
Read your BMI and weight category

Formula

BMI = weight(kg) ÷ (height(m))²

FAQ

What is a normal BMI?

Normal is 18.5–22.9 (Asian criteria).

What BMI is considered obese?

By Asian criteria, a BMI of 25 or higher is considered obese.

Does BMI apply to children?

These ranges are for adults; children should use age-specific growth charts.