FIT File Type

- The quick facts

What are FIT files and how to open them

Are you having problems opening a FIT 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 FIT file?

The .fit file extension is used for a proprietary data file format that was developed by Garmin Ltd. These .fit files are generated as activity files by the Garmin Training Center software.This program is designed for Windows PCs and Mac OS X computers. The Garmin Training Center allows users to monitor their physical activities and exercises like cycling, swimming and other workout sessions. These .fit files contain logged data like date and time stamps, activity details and other pieces of information related to the physical exercises of the user.These .fit files can be created and edited by using the Garmin Training Center software for Windows PCs or Mac OS X computers. The data stored in these FIT files can also be viewed through the user interface of this software.

How to open FIT files

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

While we have not verified the apps ourselves yet, our users have suggested 10 different FIT openers which you will find listed below.

Last updated: April 24, 2021

Suggest another file format using extension FIT

While we know of one file format using the .FIT file extension, there may be more. It is widespread that different programs use files with the same file extension for very different types of data. Please let us know if you are aware of a different kind of .FIT file.

Various apps that use files with this extension

These apps are known to open certain types of FIT files. Remember, different programs may use FIT 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
MaxIm DLMaxIm DLUser submitted
ThumbsPlusThumbsPlusUser submitted
CompuPic ProCompuPic ProUser submitted
StellaImageStellaImageUser submitted
CCDStackCCDStackUser submitted
The ESO/ESA/NASA FITS LiberatorThe ESO/ESA/NASA FITS LiberatorUser submitted
DawnDawnUser submitted
FitykFitykUser submitted
We have not verified any software that we know for certain will work with FIT-files on Mac. If you know one, please use the 'Suggest a program' link below and tell us about it!
We have not verified any web services that we know for certain will work with FIT-files. If you know one, please use the 'Suggest a program' link below and tell us about it!