Calculateur IMC

What is BMI Calculator?

BMI Calculator computes your Body Mass Index from your height and weight using either metric (kg/cm) or imperial (lb/in) units. BMI is a simple screening tool used by health professionals to classify weight categories.

BMI categories

• Under 18.5 EUnderweight
• 18.5  E24.9 ENormal weight
• 25.0  E29.9 EOverweight
• 30.0 and above EObese

Notes

• BMI does not directly measure body fat. Athletes and muscular individuals may have a high BMI despite low body fat.
• BMI thresholds may differ by age, sex, and ethnicity. Consult a healthcare professional for personalized assessment.
• This tool is for informational purposes only and is not a substitute for medical advice.

FAQ

What is the BMI formula?

Metric: BMI = weight (kg) / height (m)². Imperial: BMI = 703 ÁEweight (lb) / height (in)².

Is BMI accurate for children?

No. For children and teens, BMI is age- and sex-specific and interpreted using growth percentile charts, not the adult cutoff values.

Why is my BMI high even though I exercise?

BMI does not distinguish between muscle and fat mass. Highly muscular individuals often have an "overweight" or "obese" BMI while having healthy or low body fat percentages.