BMI Calculator
Check your Body Mass Index from your height and weight, with your healthy range shown on a visual scale.
What is BMI?
Body Mass Index (BMI) is a simple measure that uses your height and weight to estimate whether your weight falls in a healthy range. It's calculated as weight (kg) divided by height (m) squared.
Is BMI accurate for everyone?
BMI is a useful general screening tool, but it doesn't account for muscle mass, bone density, or body composition. Athletes with high muscle mass, for example, may show a higher BMI without carrying excess fat. It's best used as a starting point, not a diagnosis.
How to lower or raise your BMI safely
Gradual, sustainable changes to diet and activity levels are the safest way to move your BMI into a healthy range. If your BMI falls outside the healthy range, it's worth discussing your overall health with a doctor rather than relying on this number alone.