Calculators
BMI Calculator
Estimate your body mass index from metric height and weight.
How it works
How BMI is calculated
BMI equals weight in kilograms divided by height in metres squared. It is a screening measure, not a diagnosis, and does not account for muscle mass or every health factor.
Questions answered
Frequently asked questions
Is the BMI Calculator free to use?
Yes. The BMI Calculator is free to use and does not require an account.
Does the BMI Calculator save my input?
No. Your input is processed in your browser and is not sent to a FreeToolGrid application server.
How accurate is the BMI Calculator?
The tool applies the stated calculation or conversion to the values you provide. Verify decisions involving money, health, tax, or legal matters with an appropriate professional or primary source.