text: body fat percent? i need to calculate my body fat percent. is there a calculation to do this? i had it tested in pe last year but i think it is innaccurate. it said like 26% but i am pretty skinny and just  have fat in my stomach and chest area. plus any tips on making it go down. you're right, if you are skinny, i doubt you have 26% body fat as that would make you overfat.  there are a couple of online calculators i found (see below), that may give you a rought estimate, but it would be best to have it checked professionally and not by one of those hand held devices.  however, just remember if you store all your fat in one area, such as the stomach, it may not be entirely accurate.  hth : )