COZ file format description

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

1 filename extension(s) found in our database.

.coz - EFILive Calibration Data

The COZ data files are related to EFILive. The COZ file is an EFILive Calibration Data. EFILive is a scan and tune tool that allows you to custom-tune your diesel truck.

Data files
- / -
EFILive Calibration Data related extensions:
EFILive Calibration Tune Data

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

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

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

ckz, clz, co, coa, cos, cox, cpz, cz, doz, ocz, oz

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

Tomb Raider: The Angel of Darkness Game Data
Capture One Settings
Scilab Binary Diagram
Czech Language Info File
Zardoz Archive
BibExcel COX Data

Operating systems 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

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

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