.REL File

File extension rel seems to be best known for its use in Nintendo Wii video gaming console that was first released in 2006.

A .rel file stores relocatable module used by Wii operating system. Their function is similar to DLL (Dynamic Link Library) files in Microsoft Windows operating system.

Files with rel suffix may be often encountered as as part of programs or games for Nintendo Wii console. Some kind of module.

How to open:

Likely only useable as part of games or other programs for Ninento Wii consoles.

How to convert:

It is unlikely that this file type can be converted to anything else, considering it works much like DLL files.