.BULK File

The bulk file extension is related to the BulkZip, a data compression tool with own compression format, developed for Microsoft Windows operating system.

The bulk file stores compressed data with BulkZip software.

BULK is an advanced format that using LZMA2, PPMd and DEFLATE, the format tries to aim at high compression ratios and fast speeds.

How to open:

Use BulkZip to open and extract data from *.bulk compressed archive.

How to convert:

The easiest way how to convert BULK archive is to decompress the BULK archive with the use of compression tool and repack the content with another compression utility of your choice.