To repair your garden hose you will need a screwdriver, a utility knife and a hose repair kit. A hose repair kit can be bought at most garden centers or hardware stores and comes with a male or female threaded hose end as well as a connector for fixing a leak in the middle of a hose. Kits are available for various diameter hoses and come in both metal or plastic. If you're not sure what diameter you need cut off the broken end of the hose and bring it with you to the store.
Cut the Hose
Use your knife to cleanly cut off the broken end of the hose. The best way to do this is to place the hose on the ground, so you can apply pressure without your fingers getting in the way. The cut has to be smooth and square, not slanted or ragged. At this point you can just cut of the broken area or cut it to any length you want it to be.
Insert the Replacement
Push the threaded replacement end of the hose repair kit as far as it will go into the cut end of the garden hose. It is important to make sure the sleeve goes all the way into the hose even if it is a tight fit and takes some effort to get in.
Use a screwdriver to attach the clamp that came with the hose repair kit securely around the end of the garden hose. Make sure the two screws or one are very tight, to prevent the garden hose from leaking. The new hose should be ready to use.