Is there any difference between a single speed bike and a fixed gear bike?

Question

Is there any difference between a single speed bike and a fixed gear bike?

Answer 1

both are single speed. fixies don't freewheel, so you can't coast. you have to keep pedaling..

Answer 2

Fixed gear refers to the cog being fixed on the rear wheel.  Single speed usually means its freewheel.  Usually a hub that has fixed gear will be a flip flop hub and the other side you can put a freewheel cog.  Pretty cool eh?

Answer 3

Single speed refers to a freewheeling hub. Fixed won't freewheel.