BMI Calculator
Body mass index, metric or imperial.
Your BMI
22.9
Healthy range
Optional: sends these inputs and this result to AI. Avoid confidential or sensitive information.
About BMI Calculator
Body mass index divides weight by the square of height to give a rough screening number. It is used in population health because it is simple to compute from two common measurements.
Important considerations
BMI does not measure body fat directly and can misclassify muscular people, athletes, and some age groups. It is not a medical diagnosis — consult a health professional for personal advice.
Want to understand the math?
Read our plain-language guide: What Is BMI? What It Measures, Its Limits, and How to Read Your Number