BMI Calculator
Check your Body Mass Index from your height and weight, see what it means, and which tests are worth doing.
Your details
Height and weight
Method
How BMI works
BMI is weight in kilograms divided by the square of height in metres. Below 18.5 is underweight, 18.5–24.9 is normal, 25–29.9 is overweight and 30 or above is obese. BMI does not tell muscle from fat, so pair it with a body-fat or waist measure.