Body Mass Index (BMI) Calculator

The Body Mass Index (BMI) is a simple, widely accepted way of assessing body weight in relation to health for most people aged 20 to 65 (exceptions include people who are very muscular, athletes, and pregnant or nursing women).

Please enter your weight and height using imperial or metric measures, and click on Calculate and then your BMI will appear below.

(in/lb) (cm/kg)
Your Height:
Your Weight:
pounds (note: 8 ounces = 0.5 pounds)
Your BMI:
BMI Categories
Below 18.5Underweight
18.5 - 24.9Normal weight
25.0 - 29.9Overweight
30.0 - 39.9Obese
Above 40.0Very obese
Calculation Formula
Imperial:weight (lb) / [height (in)]² x 703
Metric:weight (kg) / [height (m)]²