How To Calculate BMI

How To Calculate BMI

To calculate your BMI, you will need to know your height and weight.


BMI = weight (kg) / height (m^2)


If you weigh 70 kg and are 1.7 meters tall, your BMI would be calculated as follows:

BMI = 70 kg / (1.7 m)^2 = 24.2 kg/m^2

BMI Chart:

BMIWeight category
Below 18.5Underweight
18.5–24.9Normal weight
30.0 and aboveObese


  • Underweight: People with a BMI below 18.5 are considered underweight. This may be due to a number of factors, such as malnutrition, eating disorders, or certain medical conditions.
  • Normal weight: People with a BMI between 18.5 and 24.9 are considered to be at a normal weight. This is the healthiest weight range for most people.
  • Overweight: People with a BMI between 25.0 and 29.9 are considered overweight. This means that they have more body fat than is ideal for their height.
  • Obese: People with a BMI of 30.0 or higher are considered obese. This means that they have a lot of excess body fat, which can increase their risk of developing health problems, such as heart disease, stroke, and type 2 diabetes.

It is important to note that BMI is just one measure of health. It does not take into account other factors, such as muscle mass, body fat distribution, and overall health. If you are concerned about your weight or health, it is best to talk to your doctor.

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Q: What is a healthy BMI?

A healthy BMI is between 18.5 and 24.9 kg/m^2.

Q: What are the risks of being overweight or obese?

Being overweight or obese can increase your risk of developing a number of health problems, including heart disease, stroke, type 2 diabetes, and some types of cancer.

Q: What can I do to lose weight and improve my BMI?

If you are overweight or obese, there are a number of things you can do to lose weight and improve your BMI, such as eating a healthy diet, exercising regularly, and getting enough sleep.

If you have any questions or concerns about your BMI, please talk to your doctor.