BMI Calculator

The BMI calculations are the LEAST ACCURATE method of measuring the human body physical condition.

This is the standard - even in 2025 - for the military and most schools. It is not accurate by any means, which is why it is here in Garrison Body "free" for you to complare to our other calculators.

The  main reason the BMI is valueless is because it does not take into account that the individual may have a lot of muscle. Muscle weighs a great deal more than fat. Therefore, if you have a lot of muscle and a very low body fat, the BMI will show you are "obese". Yet, that is the sort of information that most of the world is told to use. Garrison Body calculators, those created by Garrison Body, are not only accurate but will be your "go to" calculators when you see how well they perform.