Factorio Save Game Location

Windows

Factorio save games can be found on Windows here:

C:\Users\[user_name]\AppData\Roaming\Factorio\saves\

Steam:

Factorio save games installed through Steam can be found on Windows here:

C:\Program Files (x86)\Steam\steamapps\common\Factorio\saves

Linux

Factorio save games can be found on Linux (Proton) here:

~/.factorio/saves/