BMI Calculator
Calculate body mass index (BMI) and weight category from height and weight
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Enter your height and weight to calculate your body mass index (BMI) and see which category you fall into — underweight, normal, overweight, or obese. It also shows the weight range that falls within the normal band.
How to use
- Enter your height (cm) and weight (kg).
- Your BMI value and category appear instantly.
- You'll also see the weight range that corresponds to the normal category.
FAQ
- What's the BMI formula?
- It's weight (kg) ÷ (height (m) × height (m)). For example, 170 cm and 65 kg gives 65 ÷ (1.7 × 1.7) ≈ 22.5.
- What categories does it use?
- It uses the WHO Asia-Pacific criteria: under 18.5 is underweight, 18.5–22.9 normal, 23–24.9 overweight, and 25 or above obese.
- Is BMI enough on its own?
- BMI has limits — for example with very muscular people — so treat it as a reference. For an accurate assessment, consider body-fat percentage and consult a doctor.