BMI (Body Mass Index) Calculator

Enter weight: kg lbs
Enter height: cm in
Be sure the weight and height units are correct and click Calculate:

BMI is:

Interpreting BMI results

A BMI above the 85th percentile is considered overweight.

A BMI above the 95th percentile is considered obese.

To give you an idea of what BMIs are by age and sex, look at the tables below.
You can download a complete BMI percentile chart (in PDF format) for boys ages 2-20 and for girls ages 2-20.

For boys:

For girls:

Age	85th %ile	95th %ile
10 years old	19.4	22
12 years old	21	24.1
15 years old	23.5	26.9
18 years old	25.7	29
20 years old	27	30.6

Age	85th %ile	95th %ile
10 years old	20	23
12 years old	21.8	25.2
15 years old	24	28
18 years old	25.7	30.4
20 years old	26.5	31.8

Last updated 05/31/10

BMI (Body Mass Index) Calculator

health information