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BMI Calculator

Calculate your Body Mass Index (BMI) to see if you are at a healthy weight. This free tool maps your height and weight against standard CDC categorizations.

ft
in
lbs
Body Mass Index (BMI)23.6
Weight CategoryNormal weight

How It Works

BMI is calculated using the formula: BMI = (weight in pounds ÷ height in inches²) × 703. The result is mapped to CDC standard categories: Underweight (below 18.5), Normal weight (18.5–24.9), Overweight (25–29.9), and Obese (30 and above).

When to Use This

BMI is a useful first-pass screening tool to assess whether your weight is in a healthy range for your height. It is not a diagnostic tool and does not account for muscle mass or bone density. Always consult a healthcare professional for personalized advice.

Steps to Calculating BMI

  1. 1

    Input your height

    Enter your height in feet and inches accurately.

  2. 2

    Enter your weight

    Provide your current weight in pounds.

  3. 3

    Review your BMI number

    Your BMI will immediately generate, placing you into a standard wellness category.

Frequently Asked Questions

What is a healthy BMI?
According to the CDC, a healthy BMI range for most adults is between 18.5 and 24.9.
Is BMI a perfect indicator of health?
No, BMI is a general screening tool and does not explicitly account for body fat percentage or muscle mass. Highly muscular athletes may have a high BMI without being unhealthy.
What is the formula for calculating BMI?
For imperial measurements (lbs and inches), the formula is: [weight (lb) / height (in)²] x 703.

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