Can't find minecraft single player map?

If you are running Windows, go to the start button, type run, and press enter.

A small window should appear, type %appdata% there.

Press enter and then open the.minecraft folder.
Inside this folder you should find the saves folder, then just copy the world you want into the same folder in which you have your server, and then write that world's name in the server's properties file.

You're Welcome! Search in your PC for %appdata% and that will bring up the minecraft folder. If that doesn't work search for.minecraft in your PC and that will also bring up the minecraft folder.

Search in your PC for %appdata% and that will bring up the minecraft folder. If that doesn't work search for.minecraft in your PC and that will also bring up the minecraft folder.