Can a BMI calculator tell the difference between muscle and fat?

Q. I'm a naturally thin person (I'm 5'5" and normally about 100 lbs.), but I'm also very athletic. During the cross country season I'm often 108-110 lbs. because muscle weighs more than fat. Whenever I calculate my BMI it says that I have a higher percentage of body fat when I'm more in shape, even though I know this is not accurate. Is there a BMI calculator available that can distinguish between fat and muscle?

A. Nope BMI does not measure body fat percentage, it's merely a comparison of height and weight and takes no account of frame size, muscle mass, etc.

The only way to get an accurate body fat reading is by DEXA, hydrostatic weighing or body fat callipers.

Original Question

Is your BMI supposed to be measured by what you weigh when you first wake up?

Q. Is your BMI supposed to be measured by what you weigh when you first wake up, or what you weigh later on in the day? (Which is a few pounds more)
Thank you for your help!

A. hey well not first thing in the morning becouse while you have bee asleep your body hs had timet digest all your food you hae eaten i sugest after brekfast like an hour after kk :)

Original Question

How do you calculate your frame size to obtain an accurate BMI calculation?

Q. Also, does anyone know the site with the best BMI calculator - including a calculator that considers half inch height measurements?

A. I like this one. But you do HAVE to hit calculate BMI or else it won't work. I just did mine at 5'8.5" and it didn't have an issue with it.

http://www.nhlbisupport.com/bmi/?htf=5&hti=8.5&wt=260&bmi=

This one is the one from the CDC (Center for Disease Control). If anyone is gonna have a good BMI calculator the CDC is. The links have one for kids/teens and adults. Again, did mine for 5'8.5" and it worked no issue.

http://www.cdc.gov/healthyweight/assessing/bmi/

I hope that helps.

Original Question

Powered by Yahoo! Answers