Replacing your chain does not have to be difficult. There are many videos there talking about the math to get the correct length - and they can be rather confusing. In this short 3 minutes, I show you how to get the correct length every time!
Note: I am using a SRAM Chain with a split mater link (KMC is the same) - everything is the same for a Shimano Chain , except the master link which you use the chain tool to push in the master "pin" instead.