@roubaixtuesday has confused himself with his strange view that a link is two teeth long - he means 1/2 a link, which everybody else will call one link.
To the rest of the world, a bike chain link is half an inch long, and a derailleur chain* consists of alternating inner and outer links, meaning that a chain must be an even number of links in length.
If you go out and buy a chain that says it's 114 links long, you expect that to mean 57 inches, or 56.5 if there's a quicklink.
* there are available chains for singlespeed or hub gear use in which identical links have cranked sideplates and are inner at one end and outer at the other. They permit chain length adjustment in one-tooth increments, which can be helpful for bikes in which the effective chainstay length isn't adjustable.
