R03 File Type

- The quick facts

What are R03 files and how to open them

Are you having problems opening a R03 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 R03 file?

Files that contain the .r03 file extension are normally associated with the WinRAR file archiving utility. This program is used to take large files or large batches of files and combine them into a single archive file.

When the WinRAR application is used to create an archive file, the archive can be split into separate volumes. This allows the file to be easily transferred via the Web or saved across multiple disks.

When an archive file is split, each volume of the archive is given its own file extension. The .r03 file extension is normally given to the third volume of the split file archive. In order to extract the contents of the archive, all of the volumes must be present.

How to open R03 files

Important: Different programs may use files with the R03 file extension for different purposes, so unless you are sure which format your R03 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 R03 openers which you will find listed below.

Last updated: January 5, 2022

Suggest another file format using extension R03

While we know of one file format using the .R03 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 .R03 file.

Various apps that use files with this extension

These apps are known to open certain types of R03 files. Remember, different programs may use R03 files for different purposes, so you may need to try out a few of them to be able to open your specific file.