well a few months ago I got my bodyfat tested with calipers at my gym. I was measured out to be 8% bf...Still couldn't see my abs tho which ticks me off.... I just went to this site and based on my measurements, apparently I'm 23% bf.....ummmm riiiiiiight. Forget which site but honestly, only way u can really get it done is by calipers. Your gym may have one or ask your doctor about it but you have to find out somehow right? if you get calipers its a great way to measure your progress but your not going to be able to find your BF% that way because chances are you won't measure exactly right.