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BMI Calculator

Calculate Body Mass Index from your height and weight, in metric or imperial units.

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About this tool

Enter your height and weight to calculate your Body Mass Index (BMI) using the standard formula, along with the corresponding weight category.

How to use

  1. Choose metric (kg/cm) or imperial (lb/in) units.
  2. Enter your height and weight.
  3. Your BMI and weight category appear instantly.

FAQ

What is the BMI formula?

BMI = weight(kg) / height(m)². For imperial units it's weight(lb) / height(in)² × 703.

Is BMI a perfect health measure?

No — BMI doesn't distinguish muscle from fat and doesn't account for body composition. It's a general screening indicator, not a diagnosis.

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