The File Extensions Database


.C64 File Extension

  • Developer by: Håkan Sundell
  • Category: Emulator Files

What is an .C64 file?

.C64 is Commodore 64 ROM image

The c64 file extension is mainly related to emulator ROM files for Commodore 64 8-bit computer emulation software.

The c64 file contains program that can be emulated even on modern computers.


How to open:

You can use these files in any supported emulation software.

How to convert:

Probably cannot be converted to anything else.

How to solve problems with C64 files

  • Associate the C64 file extension with the correct application. On :
    Windows: Right click on any C64 file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.C64 files". Mac: Right click (or Ctrl-click) the C64 file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
  • Update your software that should actually open .C64 is Commodore 64 ROM image. Because only the current version supports the latest C64 file format. Search, therefore, e.g. on the Håkan Sundell manufacturer website after an available .C64 is Commodore 64 ROM image update.
  • To make sure that your C64 file is not corrupted or virus-infected, get the file again and scan it with antivirus software.