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BMI Calculator

Calculate your Body Mass Index (BMI) with imperial or metric units. See your BMI category, visual scale, and healthy weight range.

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Your Measurements

Your BMI

24.4

Normal

UnderweightNormalOverweightObese

Healthy Weight Range

128.9 - 173.5 lbs
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How to Use BMI Calculator

  1. 1

    Choose units

    Select imperial (lbs, ft/in) or metric (kg, cm).

  2. 2

    Enter weight

    Enter your weight in the selected unit.

  3. 3

    Enter height

    Enter your height in the selected unit.

  4. 4

    View results

    See your BMI value, category, visual scale, and healthy weight range.

Frequently Asked Questions

Body Mass Index (BMI) is a measure of body fat based on height and weight. It's calculated as weight (kg) divided by height (m) squared. While not perfect, it's a useful screening tool for weight categories.

Underweight: below 18.5. Normal weight: 18.5 to 24.9. Overweight: 25 to 29.9. Obese: 30 and above. These ranges are based on WHO guidelines.

BMI doesn't distinguish between muscle and fat, so athletes may have a high BMI despite being healthy. It also doesn't account for age, gender, or body composition. Consult a healthcare provider for a complete assessment.

BMI = weight (kg) / height (m)^2. For imperial units: BMI = (weight in lbs / height in inches^2) * 703.