How can I calculate my body mass index (BMI)?

Body mass index  (BMI) compares your weight to your height.

  • How to calculate the body mass index … learn here in two steps
  • BMI is defined as a person’s weight in kilograms divided by the square of his height in meters (kg/m2).
  • The most widely used method of measuring and identifying obesity is BMI
  • BMI = weight in kg/ height m2

To calculate your body mass index BMI:

Step 1: divide your weight in kilograms (kg) by your height in metres (m)

 Step 2: then divide the answer by your height again to get your BMI

For example:

If you weigh 70kg and you’re 1.75m tall, divide 70 by 1.75 – the answer is 40

Then divide 40 by 1.75 – the answer is 22.9

 Your BMI is 22.9kg/m2

 Compare your the result here

Reference numbers for BMI:

Underweight :         Below 18.5                  

Normal weight : 18.5 -24.9

Overweight : 25.0 – 29.9

Obese :        30.0 – 39.9

Extreme obesity : 40.0 and above

find more about the obesity here