Open 021 file

021 file icon Did your computer fail to open 021 file? We explain what 021 files are and recommend software that we know can open your 021 files.

What is 021 file?

A 021 file extension is related to split file or compressed file from a multi-volume archive (part 21).

021 file description

The 021 file extension is generally associated with split files. A part of larger file split using splitter software, such us HJSplit, WellTek 001 File Joiner & Splitter, SplitJoin or File Managers, such as Total Commander. It is also associated with several archivers or compression tools, which are using, or did use in the past, the 021 file extension for its multi-volume files or archives, such as Winrar (see part21.rar) or 7-Zip (see 7z.021).

In case of split files, you will need to merge them first with the use of the splitting/joining software tool, before you can open or work with them. If the files are compressed multi-volume archives, you will have to extract the first one and it will automatically continue to extract all the parts. In either case, you will need ALL the parts to access the original content.

Software that will open 021 file


Popular open source file archiver with a high compression ratio


A freeware file-splitting software

Split File Shell Extension

A file spliting utility

Total Commander

Highly popular file manager for Windows

Other 021 file extensions

021 - Winfunktion Mathematic v8.0 Julia fractal

A 021 file extension is related to the Winfunktion Mathematic and used for its Julia fractal files.

What file extension actually is?

Simply put, file extensions are the characters after the dot in the file name, so for example filename.mp3 has file extension „mp3“. This helps Windows to identify which program should be used to open the file.

We can help you to open your file

Our database contains a huge list of different file extensions, usually with detailed description and programs that can be used to open or otherwise work with that particular file type.

Only original software

Every software listed in our database is verified and ve provide link to the developer or to the software own website, which should hopefuly be enough for you to download the most recent version of the program.