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What are FITS files and how to open them

Are you having problems opening a FITS file or are you simply curious about its contents? We're here to explain the properties of these files and provide you with software that can open or handle your FITS files.

What is a FITS file?

A .FITS file is a Flexible Image Transport System Bitmap file.

We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

How to open FITS files

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

Programs that open Flexible Image Transport System Bitmap files

Last updated: September 21, 2023

Various apps that use files with this extension

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

GIMPGIMPUser submitted
MysticThumbsMysticThumbsUser submitted
MaxIm DLMaxIm DLUser submitted
ThumbsPlusThumbsPlusUser submitted
CCDStackCCDStackUser submitted
The ESO/ESA/NASA FITS LiberatorThe ESO/ESA/NASA FITS LiberatorUser submitted
3D Photo Browser3D Photo BrowserUser submitted
3DBrowser3DBrowserUser submitted
Techsoft PixEditTechsoft PixEditUser 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 FITS file formats, example files, or compatible programs. Please use the links below or email us at submit@file.org to discuss further.