Body mass index (BMI) is a measure of body fat based on height and weight that applies to adult men and women.

How to use this calculator

• Enter your weight in pounds
• Enter your height in inches
• Click the Calculate BMI button
• Your BMI and status is displayed below.

What does my number mean?

• Below 18.5 is considered underweight.
• 18.5 to 24.9 is considered healthy.
• 25 to 29.9 is considered overweight.
• 30 or higher is considered obese.
• 30.0 to 34.9 is Class 1 obesity.
• 35.0 to 39.9 is Class 2 obesity.
• 40.0 or higher is Class 3 "severe" obesity.

Teens and children

Try the BMI calculator for young people offered by the Centers for Disease Control and Prevention. It takes growth charts into account for more accuracy.