BMI Calculator

BMI Calculator

Calculate your Body Mass Index for adults or children/teens

Adults
Child & Teen
Female
Male
ft/in
cm
lbs
kg
Female
Male
ft/in
cm
lbs
kg
Your BMI is
-
-
Underweight
<18.5
Normal
18.5-24.9
Overweight
25-29.9
Obese
30+
▼

About BMI

Body Mass Index (BMI) is a measure of body fat based on height and weight. It is commonly used to categorize weight as underweight, normal weight, overweight, or obese.

For children and teens, BMI is age and gender-specific and is interpreted using percentile charts. This calculator uses standard BMI for simplicity.