Free online BMI calculator

Sex

Weight (kg)

Height (cm)

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Percentile

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BMI scale

Note: BMI does not take body composition into account. Consult a healthcare professional for a complete assessment.

What is BMI?

Body Mass Index (BMI) is a simple indicator used to assess a person's build based on their height and weight.

BMI = Weight (kg) ÷ Height (m)²

For example, a person weighing 75 kg and measuring 1.75 m has a BMI of 24.5.

Used by the World Health Organization (WHO), BMI classifies body build into several categories: underweight, normal weight, overweight and obesity. It is a quick screening tool, not a medical diagnosis.

How to interpret your result?

A BMI between 18.5 and 24.9 is generally considered normal for the general population. However, this figure does not account for muscle mass, age or fat distribution. That is why our calculator offers 3 comparison profiles:

Sedentary

Compares your BMI to the general French population. WHO reference values apply directly.

Bodybuilding

People who lift weights often have a higher BMI because of their muscle mass, without this being a problem. The optimal range is shifted upward.

Running

Regular runners tend toward a lower BMI, which supports performance and power-to-weight ratio.

The limits of BMI

BMI does not distinguish fat from muscle. A muscular athlete may have an "overweight" BMI while being in excellent health. For a complete assessment, consult a professional.

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