BMI Calculator

Enter your height and weight to calculate your Body Mass Index (BMI) and category.

How this calculator works

BMI estimates body fat using your height and weight. This tool converts your height from centimeters to meters, computes BMI, and then assigns a category based on standard thresholds.

Formula used

BMI is calculated as BMI = weight(kg) / height(m)².

Example calculation

If you weigh 65 kg and your height is 170 cm (1.70 m), then:
BMI = 65 / (1.70 × 1.70) = 22.5 (rounded to 1 decimal).

FAQs

  • Is BMI perfect? No. BMI is a screening metric and doesn’t directly measure body fat or health for every individual.
  • Why is it rounded? Rounding makes results easier to read while keeping practical accuracy.
  • Which units should I use? This calculator uses centimeters (cm) and kilograms (kg).