BMI Calculator
Calculate Body Mass Index from height and weight, in either metric or imperial units, with a clear category result.
24.2
Healthy weight
BMI is a general screening measure and doesn't account for muscle mass, bone density, or body composition — talk to a healthcare provider for a full picture of your health.
Free to use, no sign-up, no limit on how many times you run it.More calculators tools
Overview
This calculator computes Body Mass Index (BMI) from your height and weight and shows which general category the result falls into.
- Supports both metric (cm/kg) and imperial (ft/in, lb) units
- Instant result with no page reload
- Clear category labeling alongside the raw number
How to use it
- 1Choose metric or imperial units
- 2Enter your height and weight
- 3Read your BMI and category
Tips
- — If you're an athlete with high muscle mass, BMI alone can be misleading — muscle weighs more than fat by volume
Frequently asked questions
Is BMI an accurate measure of health?
BMI is a general screening tool based only on height and weight — it doesn't account for muscle mass, bone density, age, or sex, so it's best treated as a starting point rather than a full diagnosis.
What BMI range is considered healthy?
For most adults, a BMI between 18.5 and 24.9 is generally classified as a healthy weight range, though individual circumstances vary.