What are R21 files and how to open them
Are you having problems opening a R21 file or just wondering what they contain? We explain what these files are used for and show you software that we know can open or otherwise handle your files.
What is a R21 file?
A .R21 file is a Split WinRAR Archive (part 23) file.
Files with the .R21 file extension are split archive files created by older versions of WinRAR. Newer versions name the files name.partXX.rar.
WinRAR and other compression tools take collections of files and compress them into a single archive file, normally to save hard drive space and to make distributing the file collection easier.
Archive files can get very big, and sometimes it is necessary to split them into smaller parts to fit on CDs or USB drives. When an archive file is split, each part of the archive is assigned a numbered file suffix. Files with the R21 extension are part 23 of the split archive (the first part is named .RAR, second part .R00, third part .R01, etc.).
To access the content of the .R21 file, you will need to have all the archive part files in the same folder and open the first file (with file extension RAR) with your compression tool.
How to open R21 files
We have identified four R21 openers that are compatible with this specific type of R21 file.
Programs that open Split WinRAR Archive (part 23) files
Last updated: November 14, 2022
Help us help others
File.org helps thousands of users every day, and we would love to hear from you if you have additional information about R21 file formats, example files, or compatible programs. Please use the links below or email us at firstname.lastname@example.org to discuss further.