BMI body mass index calculator


The BMI (also known as the body mass index) is a number obtained by dividing the weight in kilograms by the square of the height in meters. This is a standard commonly used in the world to measure the human body obesity condition and health condition. It reflects the extent of abdominal fat accumulation, which is associated with a range of metabolic abnormalities. Users can arrange more reasonable dietary nutrition and exercise based on the test results. Our “BMI body mass index calculator” also can help you out!

The BMI Formula: Body mass index(BMI)=Weight(kg)÷ Height²(m)

BMI body mass index calculator


BMI greater than 24 is overweight and greater than 28 is obese. The standard for waist obesity is that the male waist is greater than 90 cm and the female waist is greater than 80 cm.


Body mass index(BMI)

Waist circumference

BMI < 18.5

Normal weight

Overweight: 24≦BMI<28
Obesity beginning: 28≦BMI<30
Middle obesity: 30≦BMI<35
Severe obesity: BMI≧35

Male:≧90 cm
Female: ≧80 cm


BMI values are not for adults only. For growing children, we can also use their BMI values to figure out if they are overweight.

Which groups of people are BMI not suitable for?

Not everyone is suitable for BMI to assess the degree of obesity. The following groups of people are not suitable:

  • Under 18 years of age
  • Athlete person
  • Doing weight training
  • Pregnant or breastfeeding
  • An elderly person who is weak or immobility patient

If you think that the results calculated by BMI do not correctly reflect the weight problem, please discuss the results with the doctor and ask for a body fat test.


BMI body mass index calculator
BMI body mass index calculator


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