I found this free typing test here, and took it recently. You have several options for the test. I did my best with the 1-minute test--76 words per minute and pretty decent accuracy. It's funny--I type all the time, and I thought I would be typing faster by now. In years gone by, I have clocked in at 90 wpm (forget about accuracy though! LOL)
So how fast can you type? Try it, it's fun!