Body Mass Index Calculator

Weight, weight loss, and weight management programs are on many people’s minds as we face an obesity epidemic. This body mass index calculator is a useful and interesting tool for evaluating your weight.

Enter your height and weight:
Units of Measurement

Body Mass Index Levels
(for 21 years of age and higher)
Underweight Below 18.5
Normal 18.5 to 24.9
Overweight 25 to 29.9
Obese 30 and above

About the Body Mass Index
The body mass index is a simple calculation that was developed over 100 years ago to evaluate a person's weight. Although it is a useful and interesting tool, it has two shortcomings:
1. It should be used to evaluate adults only and should not be used for people who are still growing.
2. It can give misleading results for people who are not of "average" musculature and build (for example, athletes and people with "stocky" or slender frames).

BMI is calculated by dividing weight (in kilograms) by height (in meters) squared.
BMI = W / H^2