BMI Calculator

Calculate your body mass index (BMI) from height and weight, then see the standard weight-status category for adults.

Summary:A BMI calculator divides weight by height squared to estimate body mass index. BMI is a screening measure and does not directly measure body fat or overall health.
BMI Score
0
Classification

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How to Use BMI Calculator

Follow these steps to use the BMI Calculator: 1. Select your preferred measurement system: Metric or Imperial. 2. Enter your weight in kilograms or pounds in the weight input. 3. Input your height in centimeters or feet/inches in the height field. 4. Read your calculated BMI score, category, and healthy weight ranges. Enter your measurements to calculate the estimate. This tool performs calculations locally in your browser.

BMI Calculator Formula / How It Works

The calculator divides weight in kilograms by height in meters squared, or applies the imperial scaling factor of 703 to height-weight ratios.

Formula:BMI = weight_kg / (height_m ^ 2) or (weight_lbs / (height_in ^ 2)) * 703.
Example Calculation:

For example, let's look at a weight of 70 kilograms and a height of 175 centimeters (1.75 meters). By entering these values into the tool, you will get a BMI score of 22.86, indicating a normal and healthy weight classification instantly.

Frequently Asked Questions

A BMI between 18.5 and 24.9 is considered normal or healthy weight.

No, it is a general indicator of body fatness based on height and weight, not body composition.

The calculation formula is the same, but fat distribution and muscle mass differ by gender.

Yes, heavy muscle mass can push athletes into the overweight or obese BMI ranges even with very low body fat.

Underweight (<18.5), Normal (18.5-24.9), Overweight (25-29.9), Obese (>=30).

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