How to use the BMI Calculator
- Choose US or metric units.
- Enter your height and weight.
- See your BMI and which category it falls into.
Frequently asked questions
What is a healthy BMI?
For adults, a BMI of 18.5 to 24.9 is considered a healthy weight range, 25 to 29.9 overweight, and 30 or higher obese, according to CDC categories.
Is BMI accurate?
BMI doesn't distinguish between muscle and fat, so it can misclassify athletes, older adults and some ethnic groups. It's a screening tool, not a diagnosis — talk to a doctor about your health.