BMI Calculator
Body Mass Index — free and backed by scientific sources
Calculate your BMI instantly with World Health Organization (WHO) categories. Enter your weight and height in metric or imperial units.
kg
cm
Sources
- 1WHO — BMI Classification
World Health Organization. "Body mass index — BMI." Global Database on Body Mass Index.
- 2PAHO — Overweight and Obesity
Pan American Health Organization. Data on overweight and obesity.
- 3NIH — BMI Formula
National Heart, Lung, and Blood Institute (NIH). "Calculate Your Body Mass Index."
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How it is calculated
- 1Enter your weight in kilograms (or pounds for imperial).
- 2Enter your height in centimeters (or feet and inches).
- 3BMI is calculated as: BMI = weight (kg) ÷ height² (m).
- 4The result is classified using the WHO BMI categories.
Frequently asked questions
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