Computer file extensions - B

Updated: 06/30/2019 by Computer Hope

Below is a listing of each of the different file extensions that begin with the letter "B." If you are looking for a file extension that starts with a different letter, click the corresponding beginning letter below.

B
.B3D BodyPaint 3D file.
.B64 Short for BASE64, .B64 is a compressed file extracted and used with various compression utilities.
.BAK Backup file used for important Windows files usually used with the system.ini and the win.ini.
.BAR Data file for the Age of Empires III video game.
.BAS QBasic program and Visual Basic module.
.BAT A batch file that perform tasks for you in MS-DOS, like a macro.
.BBS File that stores and displays text for bulletin board systems on the Internet.
.BFC Microsoft Windows 95 and Windows 98 Briefcase file.
.BG Backgammon game file.
.BIN Binary file used with different programs.
CD image file.
Translation tables for code pages other than the standard 437.
.BK2 Corel WordPerfect for Windows backup file.
.BK3 Corel WordPerfect for Windows backup file.
.BK4 Corel WordPerfect for Windows backup file.
.BK5 Corel WordPerfect for Windows backup file.
.BK6 Corel WordPerfect for Windows backup file.
.BK7 Corel WordPerfect for Windows backup file.
.BK8 Corel WordPerfect for Windows backup file.
.BK9 Corel WordPerfect for Windows backup file.
.BMP Graphical bitmap file used in Microsoft Paint.
.BNK Sim City backup.
.BPS Microsoft Works word processor file.
.BPT CorelDRAW bitmap file.
.BR5 3D animated or still image created with the Bryce 5 program.
.BRK Brooktrout fax file.
.BTOA Compressed file extracted and used with various compression utilities.
.BUP Type of backup file, used for backing up a DVD (digital versatile disc) IFO (info) file.
.BV1 Corel WordPerfect for Windows backup file.
.BV2 Corel WordPerfect for Windows backup file.
.BV3 Corel WordPerfect for Windows backup file.
.BV4 Corel WordPerfect for Windows backup file.
.BV5 Corel WordPerfect for Windows backup file.
.BV6 Corel WordPerfect for Windows backup file.
.BV7 Corel WordPerfect for Windows backup file.
.BV8 Corel WordPerfect for Windows backup file.
.BV9 Corel WordPerfect for Windows backup file.
.BWP BatteryWatch Pro file.
.BZ Compressed file extracted and used with bzip and bunzip various compression utilities.
.BZ2 Compressed file extracted and used with bzip2 and bunzip and other compression utilities.