The BMI Calculator works out your Body Mass Index from your height and weight. It gives a quick check of whether your weight sits in the underweight, normal, overweight, or obese range.
How to calculate your BMI
- Enter your height.
- Enter your weight.
- Calculate your BMI.
- See your number and its category.
What BMI tells you
BMI is a simple way to relate weight to height. It gives a general idea of whether you are in a healthy range. Many people use it as a starting point for thinking about diet and fitness goals.
Keep it in context
BMI is a guide, not a full health check. It does not measure muscle, age, or body shape, so athletes may read high even when fit. For a complete picture, treat BMI as one signal and talk to a health professional.