BULK file format description

Many people share .bulk files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .bulk file can be edited, converted or printed with. On this page, we try to provide assistance for handling .bulk files.

1 filename extension(s) found in our database.

.bulk - BulkZip Compressed Archive

The BULK archive files are related to BulkZip. The BULK file is a BulkZip Compressed Archive. BulkZip is a commercial file compression/file archiving utility for Microsoft Windows. The BulkZip seems to be no longer supported.

Archive files
- / -
BulkZip Compressed Archive related extensions:
BulkZip Splitted Archive

Naturally, other applications may also use the .bulk file extension. Even harmful programs can create .bulk files. Be especially cautious with .bulk files coming from an unknown source!

Can't open a .bulk file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

The .bulk file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

blk, buk, bul

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

ProWorx NXT Block Data File
I4 Bullseye Data
Autodesk 3D Studio Max Block Library
Descent Mission Builder Block
JSim Bullseye Data Format
War Thunder Skin Data

Operating systems

DataTypes.net currently supports the following operating systems:

Windows XP/Vista, Windows 7/8/10, Windows 11, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, macOS, Mac OS X, iOS, Android

If you find the information on this page useful, please feel free to link to this page.


If you have useful information about the .bulk file format, then write to us!

DataTypes.net >> BULK file