Body Mass Index (BMI)
Calculate Your BMI
Body Mass Index (BMI) is a person’s weight in kilograms (or pounds) divided by the square of height in meters (or feet). A high BMI can indicate high body fatness. BMI screens for weight categories that may lead to health problems, but it does not diagnose the body fatness or health of an individual.
How Do I Interpret Body Mass Index Information?
- About BMI for Adults
Information about BMI and interpreting this number for adults.
- About BMI for Children and Teens
Information about BMI and interpreting the BMI percentile for children and teens.
Other Helpful BMI Tools
- Adult Body Mass Index Calculator Widget
Add this widget to your website to let anyone calculate their BMI. BMI is a reliable indicator of body fatness for most people. It is used to screen for weight categories that may lead to health problems. This calculator provides BMI and the corresponding weight category. Use this calculator for adults, 20 years old and older.
- CDC Child and Teen BMI Calculator Widget
Add this widget to your website. This calculator provides BMI and the corresponding BMI-for-age percentile on a CDC BMI-for-age growth chart. Use this calculator for children and teens, aged 2 through 19 years old.
- The Children’s BMI Tool for Schools
School staff, child care leaders, and other professionals can use this spreadsheet to compute BMI for as many as 2,000 children. Also see safeguards for BMI measurement in schools.