Sort:  
  1. Check the price on Poloniex in BTC and multiply it by the price if Bitcoin in USD.
  2. http://www.steemdollar.com does that for you :)

Thank you, thank you even very much, Petey Pablo.

Coincap.io. Search for Steem in the top and it will filter to just Steem and Steem Dollars.

Demotruk with the key info, kuhchunguh sir, and thank you.