GCA4 file format description

Many people share .gca4 files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .gca4 file can be edited, converted or printed with. On this page, we try to provide assistance for handling .gca4 files.

1 filename extension(s) found in our database.

.gca4 - GURPS Character Data

The GCA4 game data files are related to GURPS. The GCA4 file is a GURPS Character Data. GURPS (Generic Universal RolePlaying System) is a table-top roleplaying game system published by Steve Jackson Games.

Game Data files
- / -
GURPS Character Data related extensions:
GURPS Character Assistant Data
GURPS Character Base Data
GURPS Character Party Data
GURPS Character Sheet Data
GURPS Data File

Naturally, other applications may also use the .gca4 file extension. Even harmful programs can create .gca4 files. Be especially cautious with .gca4 files coming from an unknown source!

Can't open a .gca4 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 .gca4 file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

ca4, gca, gcat

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

STABCAL Calculation Data
DGCA Archive
GUI Design Studio Catalogue File
Delphi Install Disk Data

Operating systems

DataTypes.net currently supports the following operating systems:

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

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DataTypes.net >> GCA4 file