BMI Calculator

Calculate your Body Mass Index with a responsive, ad-heavy calculator page.

Calculate Your BMI

Enter your height and weight to estimate your BMI and general weight category.

Unit System Metric — kg / cm Imperial — lb / ft / in Age Weight (kg) Height (cm) Weight (lb) Height (feet) Height (inches)

Calculate BMI Reset

Your BMI 0.0

Category —

Healthy Weight Range —

Underweight Below 18.5

Healthy Weight 18.5 – 24.9

Overweight 25 – 29.9

Obesity 30+

Your BMI estimate will appear here.

What Is BMI?

Body Mass Index is a simple estimate that compares body weight with height. It is commonly used as a general screening tool, but it does not directly measure body fat, muscle mass or overall health.

BMI Formula

Metric BMI uses: BMI = weight in kg ÷ height in metres squared. Imperial BMI uses: BMI = 703 × weight in pounds ÷ height in inches squared.