BMI Calculator

Calculate your Body Mass Index using height and weight. Supports both metric and imperial units with health range indicators.

What is BMI?

Body Mass Index (BMI) is a simple measure of body fat based on height and weight. The formula is: BMI = weight (kg) ÷ height (m)². For imperial units, the formula is: BMI = (weight in pounds × 703) ÷ (height in inches)².

BMI is a screening tool, not a diagnostic tool. It does not account for muscle mass, bone density, age, sex, or ethnicity. A healthcare provider can perform further assessments to determine health risks.