C64 file format description

Many people often share .c64 files without providing instructions on how to use them. This can make it difficult for users to determine which program is compatible for editing, converting, or printing .c64 files. To address this issue, we have created this page to offer assistance and guidance on handling .c64 files. We provide information on compatible software, editing instructions and conversion options to help users effectively interact with .c64 files.

Our aim is to simplify the process and promote seamless use of the .c64 file format.

2 filename extension(s) found in our database.

.c64 - PC64 Saved Session

The C64 data files are related to PC64. The C64 file is a PC64 Saved Session. Personal C64 (PC64) is a Commodore 64 emulator for the PC.

Data files
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PC64 Saved Session related extensions:
PC64 Emulator Data
PC64 Emulator 64K Data
PC64 Relative Container Data
PC64 SEQ Container Data
PC64 User Container Data

.c64 - Commodore 64 ROM Image

The C64 data files are related to Vice C64 Emulator. The C64 file is a Commodore 64 ROM Image. Commodore 64 is a home computer released in January 1982 by Commodore and retired in April 1994.

Vice C64 Emulator
Data files
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Commodore 64 ROM Image related extensions:
SHELX Reflection Data
Digital Works Circuit Project
HiCAD 3D Part Data
Motorola Phone Book
Summit Event Manager Event Data
RSView Machine Edition Parameters Data

Naturally, other applications may also use the .c64 file extension. Even harmful programs can create .c64 files. Be especially cautious with .c64 files coming from an unknown source!

Can't open a .c64 file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

The .c64 file extension is often given incorrectly!

Based on searches conducted on our site in the past year, we have compiled a list of the most common misspellings. These frequent misspellings can cause confusion and hinder search accuracy. By providing this list, we aim to assist users in finding the correct information more easily and improving their overall search experience on our site.

These misspellings were the most common in the past year:

c4, ct4, d64, f64, v64, x64

Is it possible that the filename extension is misspelled?

There is a possibility that the .c64 filename extension is misspelled. To assist users in identifying potential errors, we provide a list of similar file extensions in our database.

Filename extensions similar to .c64:

Clonk 4 Script
1000 Miglia Game Data
CaseMap 4 Template
Commodore 64 Disk Image
Floating-point Raw 64-bit Audio
Edmics Image

Operating systems

At DataTypes.net, we strive to provide a seamless user experience by ensuring compatibility with a wide range of operating systems. The following is a comprehensive list of the operating systems currently supported by DataTypes.net:

Windows XP/Vista, Windows 7/8/10, Windows 11, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, macOS, Mac OS X, iOS, Android

If you find the information on this page useful, please feel free to link to this page.


If you have useful information about the .c64 file format, then write to us!

DataTypes.net >> C64 file