BMI Calculator

Enter your weight and height in metric or imperial units to see your body mass index and its category. BMI is a screening measure and not a diagnosis.

How to use it

  1. Choose metric (kg, cm) or imperial (lb, in).
  2. Enter your weight and height.
  3. Read your BMI and category.

Frequently asked questions

What are the BMI categories?

Underweight: below 18.5. Healthy weight: 18.5 to 24.9. Overweight: 25.0 to 29.9. Obesity: 30.0 and above (CDC adult categories).

Is BMI accurate for everyone?

No. It does not measure body fat or muscle. Speak to a health professional for personal advice.

Sources

Rates were checked against these official pages in November 2026. Rates change, so always confirm on the source before you act. This is an estimate, not tax, legal or financial advice.