Check Your Body Mass Index Online

Use our free BMI calculator to check your Body Mass Index in seconds.

BMI Calculator

Check your Body Mass Index using metric or imperial units. Get your BMI score, weight category, BMI Prime, ideal weight range, and how much weight you may need to gain or lose to reach a healthier range.

Choose Units
For adults age 20 and above.

This calculator is for adults and uses standard BMI formulas. BMI is a screening tool and does not directly measure body fat.

Your Results

Not calculated yet
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BMI Score
Underweight Healthy Overweight Obesity

Enter your age, gender, height, and weight to calculate your BMI and view your detailed result.

BMI Prime
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Ponderal Index
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Ideal Weight Range
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Weight Change to Healthy Range
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Height: —

Weight: —

What this means

  • Use the calculator to get your result.
  • Your BMI category will appear here after calculation.
  • This tool is best used as a general screening guide.