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Old 01-07-06, 05:50 PM   #1
TomM
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Body Fat Formulas

Has anybody used a formula to determine body fat? A newsletter that I subscribe to had an article about body fat and listed 2 formula's that could be used to determine body fat. They are:

MALE BODY FAT CALCULATOR
100*(-98.42 + 4.15waist - 0.082weight)/weight) = % Body Fat

FEMALE BODY FAT CALCULATOR
100*(-76.76 + 4.15waist - 0.082weight)/weight = %Body Fat

Can somebody who has had their body fat measured use one of the above formulas? I am interested in seeing how accurate they are.

Thanks
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Old 01-07-06, 08:15 PM   #2
sjjone
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uh, it's been a while since I did math and all, but that gave me a negative number.
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Old 01-07-06, 08:21 PM   #3
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You need units!
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Old 01-08-06, 04:57 AM   #4
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I ended up with a negative weight... I think I went overboard with my weight-loss training...
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Old 01-08-06, 05:25 PM   #5
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You actually should come up with a positive number (remember your order of operations from algebra and divide everything that you get on top by your weight which is the only number on the bottom) I came up with 11.3% which is actually within 1% of the value that I got the last time that I had a skin-fold caliper test done.
However, I don't know if this would work for everyone because people have fat stored in places other than around their waist. Some people are "apples" and some people are "pears".

Last edited by lillypad; 01-08-06 at 05:32 PM.
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