BMI calculator

Find out your Body Mass Index from your weight and height.

Units

Metric (kg, cm)Imperial (lb, ft)

Weight (lb)

Height

How it works

BMI is the weight (kg) divided by the height (m) squared.
The ranges follow the World Health Organization classification for adults.
BMI does not tell muscle from fat and does not apply to children, pregnant women or older adults. For a full assessment, see a health professional.
The calculation runs in your browser: no data is sent or stored.