BMI - Calculate Your Body Mass Index (BMI)

Calculate your BMI for free with your height and weight. Find out if you are underweight, normal weight, overweight or obese.

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About the Body Mass Index

What is BMI?

The Body Mass Index (BMI) is a value used to estimate a person's body fat. It is calculated based on the person's height and weight. BMI is a health indicator that helps determine if a person is overweight, underweight, or has a normal weight.

How to calculate BMI?

To calculate your BMI, simply enter your height (either in feet and inches or in centimeters) and weight (in lbs or kg) into the form above. Then click the "Calculate" button to get your Body Mass Index.

The BMI calculation formula is as follows: BMI = weight (in kg) / height² (in m²). For example, if you weigh 70 kg and are 1.75 m tall, your BMI is 22.9.

Interpretation of the Body Mass Index

The interpretation of BMI is as follows:
  • BMI below 18.5: underweight
  • BMI between 18.5 and 24.9: normal weight
  • BMI between 25 and 29.9: overweight
  • BMI between 30 and 34.9: moderate obesity
  • BMI between 35 and 39.9: severe obesity
  • BMI over 40: morbid obesity

Why calculate your BMI?

Calculating your BMI helps determine if your weight is normal, overweight, or underweight. BMI is a health indicator that helps prevent diseases related to obesity.

It is important to monitor your weight and maintain a normal BMI to preserve your health. If your BMI is outside the normal range, it is recommended to consult a doctor for personalized advice.

What are the risks associated with obesity?

Obesity is a risk factor for many diseases, such as diabetes, cardiovascular diseases, high blood pressure, respiratory diseases, joint diseases, etc. It is therefore important to monitor your weight and maintain a normal BMI to preserve your health.

What are the risks associated with being underweight?

Being underweight can also be dangerous for health. Underweight can lead to nutritional deficiencies, bone fragility, chronic fatigue, sleep disorders, etc. It is therefore important to maintain a balanced weight to preserve your health.