BAK File

What are BAK files and how to open them

Are you having problems opening a BAK 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 BAK file?

BAK files have multiple uses, and Backup is one of them. Read more about the other uses further down the page.

Backup File

The .bak file extension is used for general backup files. Many applications and computer processes use the .bak extension to create backups of documents that the program is creating.

The .bak file extension is a common file extension for the files created by the auto-save features found in many computer applications. For example, when you are editing a document in Microsoft Word and the auto-save feature kicks in, a .bak file will be created.

Files with the .bak extension are also commonly created before your computer begins to execute a complex operation, ensuring your data will be restored if something happens during the process.

These files are typically automatically deleted by the application that created them when the file is no longer needed or left behind so you have a copy of your data that can be manually restored if required.

How to open BAK files

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

Programs that open Backup files

Last updated: December 19, 2022

More file formats using the BAK extension

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

  • Microsoft SQL Server Backup File
  • MIUI Backup Data

Various apps that use files with this extension

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

Jw_cadJw_cadUser submitted
AutoCADAutoCADUser submitted
Microsoft OfficeMicrosoft OfficeUser submitted
Hancom OfficeHancom OfficeUser submitted
Adobe AcrobatAdobe AcrobatUser submitted
FinaleFinaleUser submitted
TEditXnaTEditXnaUser submitted
iTunesiTunesUser submitted
Adobe PhotoshopAdobe PhotoshopUser submitted
AudacityAudacityUser submitted

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