# Thread: BF% Formula

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## BF% Formula

I know there are tons of BS calculators and formulas on the web, but I think this one is pretty damn close to accurate. 3 of my friends almost live by it. Tell me what you guys think, I know it's kind of long and a pain in the ass, but its pretty damn accurate, imo. What do you guys think?

http://www.bmi-calculator.net/body-f...at-formula.php

2. interesting, I will have to get a wrist measurment.. will try back later

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^ You don't need it...that is for females. Males is underneath of that.

4. ^is this in standard or metric?

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Body Fat Formula For Men

Factor 1= (Total body weight x 1.082) + 94.42
Factor 2 =Waist measurement x 4.15
Lean Body Mass =Factor 1 - Factor 2
Body Fat Weight= Total bodyweight - Lean Body Mass
Body Fat Percentage= (Body Fat Weight x 100) / total bodyweight

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Standard...I did the waist in inches

7. this thing is off..

according to this i am 18.5%..

(238lbs x 1.082) + 94.42 = 351.936
(38inches x 4.15) = 157.7

LBM = 194lbs
Fat = 44lbs of fat

BF% = 18.5%

I am anywhere between 18-20% so this is fairly accurate
Last edited by MACHINE5150; 03-10-2011 at 11:36 AM. Reason: measured my hips rather than waist.. updated result

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are you measuring your waist flexing or relaxed?

9. if i put my waist at 38inches it says i am 18.5%.. which is more accurate.... i wear 38" pants.. but my waist around my hips is 36" ... if i measure around my belly button and around (even sucking in) i am 38".. so maybe that is where i am supposed to measure???

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Originally Posted by MACHINE5150
if i put my waist at 38inches it says i am 18.5%.. which is more accurate.... i wear 38" pants.. but my waist around my hips is 36" ... if i measure around my belly button and around (even sucking in) i am 38".. so maybe that is where i am supposed to measure???
Exactly. Thats where your true waist is. I have a 33.5 around the belly button, but where my belt would lay, its under a 33"

11. ^^^Okay.. i will edit my orignal post then.. i was just thinking waist like pant size waist..

12. I am -5%

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Originally Posted by MACHINE5150
^^^Okay.. i will edit my orignal post then.. i was just thinking waist like pant size waist..
Cool so we have 4/4 that is pretty accurate. Lets see if others join in.

14. I got 19% so I think it is accurate!

15. I am 13.99%. I like this calculator lol. I always guesstimaked my BF @ 14-15% so i say its pretty accurate.

16. Originally Posted by ******
Exactly. Thats where your true waist is. I have a 33.5 around the belly button, but where my belt would lay, its under a 33"
Umm it says hips not stomach. In my mind hips are under your waist not above.

17. Puts me at 14.85%. It's pretty accurate I'd say.

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Originally Posted by DSM4Life
Umm it says hips not stomach. In my mind hips are under your waist not above.
It says nothing about hips, it says "waist measurement" and yes, hips are under your waist (right where your belt would fit) and an accurate waist measurement is on the belly button

19. i did mine from the calculations and got 16.6 %. i think i have to be at least 22%. thats me in my avi. i say it is off

20. Originally Posted by ******
It says nothing about hips, it says "waist measurement" and yes, hips are under your waist (right where your belt would fit) and an accurate waist measurement is on the belly button
When you wear pants around your waist do your pants cover your belly button ?

21. Im using the Body fat calculator and it says "waist"

http://www.bmi-calculator.net/body-fat-calculator/

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Originally Posted by DSM4Life
Im using the Body fat calculator and it says "waist"

http://www.bmi-calculator.net/body-fat-calculator/
Pant size is a bad indicator of waist. Everyone is going to have smaller #s in your idea of "waist". I was always told an accurate waist measurement is at the belly button or slightly under it. We need someone with more credibility than both of us to chime in here.

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24. Originally Posted by ******
Pant size is a bad indicator of waist. Everyone is going to have smaller #s in your idea of "waist". I was always told an accurate waist measurement is at the belly button or slightly under it. We need someone with more credibility than both of us to chime in here.
I have never heard of anyone measuring waist at the belly button.

25. im dumb and cant figure it out if someone can do mine 184lbs 32w

26. You might be right ******. I see a lot of peopl measuring the waist where you said. Weird.

27. wasnt accurate for me at all, maybe I did it wrong. Had me at like 18 something which is way high

28. i m at 16%

29. Originally Posted by mbmetc
im dumb and cant figure it out if someone can do mine 184lbs 32w
12.7% bf

30. Originally Posted by 00ragincajun00
i did mine from the calculations and got 16.6 %. i think i have to be at least 22%. thats me in my avi. i say it is off
looking at your avi i would say closer to 19%.. you measured around your belly button right??? not your pant size..

31. Originally Posted by calgarian
i m at 16%
Me, too, but I am hoping that is a tad high.

32. Way too low, IMO. It says mine should be 14.1%. I'm actually around 20-21%, I think.

33. I was figuring I'm between 16 and 18, this thing pegged me at 17%. That sucks but I think it's accurate. Starting a cut cycle next week. Single digits, i'm coming back to you!

34. Originally Posted by DSM4Life
I have never heard of anyone measuring waist at the belly button.
If you ever get pants fit by a tailor they measure waist up by the belly button. I remember it was just slightly below the belly button, maybe an inch or so.

35. Originally Posted by MACHINE5150
looking at your avi i would say closer to 19%.. you measured around your belly button right??? not your pant size..
i did pant size. so it is prob at 19%+

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