BMI Calculator
Find your Body Mass Index in seconds. Switch between metric and imperial units.
Your result
Pop in your height and weight and we'll work it out.
How it works
BMI is calculated by dividing your weight in kilograms by the square of your height in metres. For imperial units, we multiply by 703 to convert pounds and inches.
It's a quick way to see whether your weight is in a typical range for your height — but it's just one signal. Body composition, activity, and overall health matter too.