Originally Posted by air king
I agree with Velocity. If you really want to know your max heart rate, get a stress test done. I'm 28 and a couple of years ago I had a nuclear stress test performed and my max heart rate was 212.

That seems to be fairly high but when I'm out running or riding, I routinely maintain HR above 175. So, at best the formulas given are a starting point.
Wow 212 is freaking me out dude! I haven't seen those kind of HR's since I was 18! What sort of test did they give you? Mine was on the tread mill from hell.
Velocity