BMI Calculator

BMI Calculator

Calculate your Body Mass Index (BMI) using your height and weight with this free online BMI calculator.

BMI Categories

BMI Range Category
Below 18.5 Underweight
18.5 – 24.9 Healthy Weight
25.0 – 29.9 Overweight
30.0 or higher Obesity

BMI is a screening measurement based on height and weight. It does not directly measure body fat and does not account for every factor that can affect health.

BMI Formula

For metric measurements:

BMI = Weight (kg) ÷ Height² (m)

For imperial measurements, BMI can be calculated using weight in pounds and height in inches.

How to Use the BMI Calculator

  1. Select Metric or Imperial units.
  2. Enter your weight.
  3. Enter your height.
  4. Click Calculate BMI.
  5. Review your calculated BMI and category.
Important: BMI is a general screening tool and should not be treated as a medical diagnosis. Children, teenagers, pregnant people, athletes, and some other groups may require different methods of assessment.

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