Health & Fitness
BMI Calculator - Calculate Body Mass Index
Free BMI calculator to find your body mass index and weight category.
Formulas and edge cases are reviewed against authoritative references before publication. For methodology, editorial standards, or corrections, use the links below.
Frequently asked questions
What is BMI?
BMI is a simple index based on height and weight that helps estimate healthy body weight ranges.
Is BMI accurate for athletes?
BMI does not distinguish between muscle and fat, so athletes may see higher values even with low body fat.
What is a normal BMI range?
A BMI between 18.5 and 24.9 is generally considered normal for adults.
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About this tool
This BMI Calculator turns your inputs into practical results. Provide Weight and Height to calculate Your BMI and Category.
Adjust values to compare scenarios and see how sensitive the result is. The calculation uses the numbers as entered, so double-check units and expect small differences from rounding in the displayed totals.