Measure your weight in kilograms or pounds
Measure your height in meters or inches
Use the BMI formula: BMI = weight in kg ÷ height in m²
If using pounds and inches, use: BMI = (weight in lb ÷ height in in²) × 703
Square your height before dividing
Enter the values into a BMI calculator if preferred
Compare the result with standard BMI categories
Use the same calculation for women and men