Accurate body fat calculator?

ASH2038602

I have been using online calculators to track my body fat. I was using active.com, but switched when it said I was entering "fitness," because I know that isn't accurate. I switched to a different one last week that said I was 45.1% body fat, now looking at all of the other ones they are saying 27%. What the hell? Anyone know of a reliable one, or can anyone tell me which one of the above numbers is more likely? I would feel better about 27%, but not if it's totally inaccurate lol. I am 5'6 and weigh 213lbs (which is why I feel 27% is too low.) I know these are just estimations, but I still like to keep track of it.