BMI Calculator
Calculate Body Mass Index from weight and height.
Results
BMI
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Category
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How this BMI calculator works
BMI (Body Mass Index) is calculated using the formula:
BMI = weight(kg) ÷ [height(m)]²
Categories (WHO)
- Underweight: BMI < 18.5
- Normal: BMI 18.5 – 24.9
- Overweight: BMI 25.0 – 29.9
- Obese: BMI ≥ 30.0
Notes
BMI is a screening tool and does not measure body fat directly. It provides a general indication of health status based on weight and height.
Athletes and individuals with high muscle mass may have a higher BMI without excess body fat.