BMI Calculator
Estimate body mass index from height and weight.
For estimation only. This is not medical advice and does not diagnose or treat any condition.
Read the guide
BMI: what the number can and cannot tell you →
Learn what body mass index measures, how the calculation works, and why one number cannot describe a person’s health on its own.
Questions and answers
How is this calculated?
BMI = weight in pounds ÷ height in inches squared × 703.
Are my inputs saved?
No. Your values stay in this browser unless you choose to copy or download a result.