The basic equation to calculate your BMI is:

  • Using metric units:
    \text{BMI}=\dfrac{\text{weight in kilograms}}{(\text{height in meters})^2
  • Using US units (pounds/inches):
    \text{BMI}=\dfrac{\text{weight in pounds}}{(\text{height in inches})^2}\times 703

Example: If you weigh 70 kg and are 1.70 m tall, then BMI = 70÷(1.70^2)≈24.2.