body mass.... or fat

So, I finally found a body fat calculator online that takes into consideration multiple measurements- besides, height, weight and waist. According to this method, I have 21.6% body fat. Which isn't terrible. I think the "ideal range" for women is something like 20-25. However, this site also said that if you are very fit it can give a measurement 3-5% higher than actual. I'm going pretend I am and go with that. So, in my happy little mind, I'm at 18.6%. Yes, that will do much better.