About this bmi calculator
Estimate body mass index from height and weight.
How to use it
Enter the values requested by the calculator. Results update in your browser as you change the inputs. Review the assumptions shown on the calculator before using the result.
Formula
BMI = weight ÷ height² after converting to compatible units
Example
BMI is a screening measure, not a diagnosis. Interpret the result with appropriate health context.
Frequently asked questions
What does the bmi calculator show?
Estimate body mass index from height and weight.
Are the results exact?
The result is calculated from the inputs and assumptions shown on this page. For important financial, health, tax, or legal decisions, verify the result with an appropriate professional or authoritative source.