Calculateur d'IMC gratuit
Enter your height and weight to calculate your Body Mass Index instantly.
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Underweight
Normal
Overweight
Obese
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How It Works
BMI (Body Mass Index) is calculated as weight in kilograms divided by the square of height in meters: BMI = kg / m². Enter your measurements, press Calculate, and get an instant result with a category classification.
BMI Categories (WHO)
- Underweight · BMI below 18.5
- Normal weight · BMI 18.5 – 24.9
- Overweight · BMI 25 – 29.9
- Obese · BMI 30 and above
Frequently Asked Questions
Is BMI a perfect measure of health?
No. BMI is a simple screening tool based on height and weight. It does not account for muscle mass, bone density, age, sex, or body-fat distribution. Consult a healthcare professional for a complete health assessment.
Does it work for children?
This calculator uses the standard adult BMI formula. Child and teen BMI is age- and sex-specific and requires growth-chart percentile interpretation.
Is my data stored?
No. All calculations run entirely in your browser. Nothing is sent to any server.