It said 24%. Last time I had my body fat measured with a good set of calipers by an athletic trainer at the gym it was 16.5%, and if anything I think my body fat is lower now. The circumference-based estimates are highly inaccurate. There is no way to know how much of the circumference is fat and how much is muscle. On someone who is thick-waisted like me, they are completely off.

Methods of body fat testing, in order of accuracy:

1. postmortem dissection
2. hydrostatic weighing (in the tank of water)
3. calipers (used by a trained person)
4. bioelectrical impedence
5. measurements

I have found that bioelectical impedence gives me both an inaccurate and unreliable result. As Jag mentioned, very dependent on hydration levels. Usually majorly overestimates my body fat.

Jen