CWKS file format description

Many people often share .cwks 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 .cwks files. To address this issue, we have created this page to offer assistance and guidance on handling .cwks files. We provide information on compatible software, editing instructions and conversion options to help users effectively interact with .cwks files.

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

1 filename extension(s) found in our database.

.cwks - ClarisWorks Data

The CWKS data files are related to AppleWorks. The CWKS file is a ClarisWorks Data. ClarisWorks is an integrated office application, which provides word processing, graphics, illustration, spreadsheet, charting/graphing, presentation and database capabilities.

Data files
- / -
ClarisWorks Data related extensions:
ClarisWorks Assistant
ClarisWorks ClarisDraw Data
ClarisWorks Font
ClarisWorks 3 Document
ClarisWorks Color Palette
ClarisWorks Database

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

Can't open a .cwks 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 .cwks 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:

cks, cwk, cwms, cws, wks

Is it possible that the filename extension is misspelled?

There is a possibility that the .cwks 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 .cwks:

CattleMax Data
DeskMate Worksheet Data
GC-Prevue Work Data
Windows CE ROM Image Checksum
Lotus 1-2-3 Worksheet
CompeGPS Land Remote Map Data

Operating systems

At, 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

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 .cwks file format, then write to us! >> CWKS file