There are several reasons why you would want to be able to find your save files if you are a Factorio player. Among the popular reasons, one is to generate backups that prevent progress loss in case saves are lost or corrupted. These backups are doubled as saves; you can get back to it at a later date for mere nostalgia or to check how much of progress you have made in the game. Certain third-party applications that let you change your game saves also need access to the save files. That is why it is important to know where your saved files are.
But the question should not be why you would want to access your game saves. Rather, it should be how you can access them. For your operating system, you can get help below:
Thankfully, Save Location has the answer. You can find your Factorio saves at the following locations:
Windows
On Windows, Factorio saves can be found in the following folder:
%AppData%\Factorio\saves
Your folder and folder path should look like this:
Mac
If you’re playing Factorio on a Mac, you’ll find your game saves in this directory:
~/Library/Application Support/factorio/saves
Linux
Factorio game save files on Linux are at this path:
~/.factorio/saves
Mods Folder
Where your Factorio mods folder is located varies based on the operating system you’re playing Factorio on. See help specific to your computer below.
Windows
Find your Factorio mods in the following folder for Windows installations:
%AppData%\Factorio\mods
Mac
Mac versions of Factorio have their mods placed in this directory:
~/Library/Application Support/factorio/mods
Linux
Mods for installations of Factorio on linux-based operating systems can be found at this path:
~/.factorio/mods