I tried that calculator, and the results are interesting. I ran the calculation for both genders and I think that, in my case, the female one is much more accurate.
The male one gave me a result of 33.9%.
The female one gave me a result of 56.0%
I currently weigh 266.0 pounds. The lightest I ever weighed as an adult was 125 pounds. If we assume that was all lean body mass, which is neither true nor accurate, and then subtract that from 266 pounds, that gives a result of 141 pounds of fat.
141 pounds of fat / 266 pounds * 100% = 53.0%. This value is much closer to the 56.0% given by the female calculation. The male calculation is off by 19.1 percent.
