CEL File

What are CEL files and how to open them

Are you having problems opening a CEL file or just wondering what they contain? We explain what these files are used for and show you software that we know can open or otherwise handle your files.

What is a CEL file?

CEL files have multiple uses, and Affymetrix Probe Results is one of them. Read more about the other uses further down the page.

Affymetrix Probe Results

These CEL files contain information on the probe set's intensity values, and a probe set represents a gene. Information about probes gets extracted from the image data by Affymetrix, an image analysis software.

How to open CEL files

Important: Different programs may use files with the CEL file extension for different purposes, so unless you are sure which format your CEL file is, you may need to try a few different programs.

While we have not verified the apps ourselves yet, our users have suggested ten different CEL openers which you will find listed below.

Last updated: January 19, 2023

All known file formats using extension .CEL

While Affymetrix Probe Results is a popular type of CEL-file, we know of 6 different uses of the .CEL file extension. Different software may use files with the same extension for different types of data.

Bentley MicroStation CAD Cell library

These CEL files contain complex elements created in Bentley MicroStation, a design and construction software. CEL files are used to eliminate the repetitiveness of redrawing the same elements in a floor or building plan. These CEL files can be found under the Cell library for everyone, who is part of the project, to use.

CEL opener for Windows

We have identified 2 CEL openers that are compatible with this specific type of CEL file.


Celestia script

These CEL files contain the simulated versions of the universe used in Celestia, a 3D astronomy software. Celestia grants you the opportunity to traverse a simulated universe. You can view the stars, planets, and moons at different speeds and sizes.

Programs that open these CEL files

We have identified one CEL opener that is compatible with this specific type of CEL file.


Chasm CEL bitmap

These CEL files contain information on the color index used to indicate transparent areas on images in Chasm: The Rift, a first-person shooter game.

More file formats using the CEL extension

Through our research of CEL files, we know that the following formats exist. However, we have not yet analyzed them in detail.

  • Audition Loop
  • KiSS CEL Bitmap

Various apps that use files with this extension

These apps are known to open certain types of CEL files. Remember, different programs may use CEL files for different purposes, so you may need to try out a few of them to be able to open your specific file.

Bentley Systems RedlineBentley Systems RedlineDiscontinued
QuickTimeQuickTimeUser submitted
Cool Edit ProCool Edit ProUser submitted
Adobe AuditionAdobe AuditionUser submitted
QuickTime AlternativeQuickTime AlternativeUser submitted
GIMPGIMPUser submitted
Native Instruments BatteryNative Instruments BatteryUser submitted
Bentley ViewBentley ViewUser submitted
Storm CodecStorm CodecUser submitted
Photomania DeluxePhotomania DeluxeUser submitted

Help us help others

File.org helps thousands of users every day, and we would love to hear from you if you have additional information about CEL file formats, example files, or compatible programs. Please use the links below or email us at submit@file.org to discuss further.