How it works
BMI divides your weight in kilograms by your height in metres squared. Imperial values are converted automatically.
Captain Workout tools
BMI Calculator
Get a quick height-to-weight screening estimate and see the standard healthy-weight range for your height.
How to use it
Use the result as a broad reference point. Athletic people can have a higher BMI because the formula cannot separate muscle and fat mass.
Useful next step
Track waist circumference, body-fat estimates, photos and training performance to build a more complete view of progress.