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.BAC File Extension

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File TypeBackup File

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Rare Uncommon Average Common Very Common
CategoryBackup Files


This file is saved in a binary format, which requires a specific program to read its contents.


Backup of a file or group of files created by Backup Plus, a file backup program from Avantrix; may be a standalone backup file or part of a split archive, which uses the ".b01," ".b02," etc. extensions; can be restored using the Backup Plus Restore Manager.

More Information

The Backup Plus software is no longer supported. If you have a single BAC file that is not a split archive, try renaming the file extension to ".zip" and opening it with a .ZIP decompression utility, such as WinZip. If you have a split archive, try also renaming the split archive files (".b01" to ".z01", etc.) and opening it with WinZip.

Program(s) that open .BAC files
Microsoft Windows LogoWindows
Avantrix Backup Plus
Updated 2/11/2011