Free fitness calculator
BMI Calculator
Calculate body mass index and understand the general category.
What BMI tells you
BMI compares weight to height. It is quick, but it does not show muscle mass, fat distribution or fitness.
Use carefully
For active people, BMI can be misleading. Treat it as one rough signal only.
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Search queries this calculator helps answer
This page is written for people looking for quick calculator-style answers, including these common search phrases:
- bmi calculator australia
- body mass index calculator
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How to use the result
Use the calculator output as a starting estimate. Check the assumptions, compare it to real-world results, and adjust if your situation changes.