BMI-Rechner

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Enter your height and weight.

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.