R31 File Type

- The quick facts

What are R31 files and how to open them

Are you having problems opening a R31 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 R31 file?

The .r31 file extension is most commonly associated with split volumes of file archives. When a file archiving utility, such as WinRAR, is used to compress a large batch of files into a single file archive, the archive can be split into separate volumes. This makes it easier to distribute the files online or split the archive across multiple storage disks. When an archive is split into smaller volumes, each volume of the archive is given its own extension. These extension are usually numbered in sequence, such as .r01, .r02, .r03, etc. The .r31 file extension is normally assigned to the 31st volume of the file archive. In order to open the contents of the file archive, all of the volumes must be present.

How to open R31 files

Important: Different programs may use files with the R31 file extension for different purposes, so unless you are sure which format your R31 file is, you may need to try a few different programs.

While we have not verified the apps ourselves yet, our users have suggested 10 different R31 openers which you will find listed below.

Last updated: March 19, 2022

Suggest another file format using extension R31

While we know of one file format using the .R31 file extension, there may be more. It is widespread that different programs use files with the same file extension for very different types of data. Please let us know if you are aware of a different kind of .R31 file.

Various apps that use files with this extension

These apps are known to open certain types of R31 files. Remember, different programs may use R31 files for different purposes, so you may need to try out a few of them to be able to open your specific file.