.O File

File extension o is traditionally used for Object file format. These files contain object code and any other related data typically produced by a compiler or assembler. Can also be referred to as Object code or Object module.

Many different object file formats are used, because originally, each computer type had its own unique format, but the file extension and purpose of these files was always the same.

Formats that use o file extension include a.out, COFF, ELF, PE, Mach-O, SOM, Hunk, MZ, ECOFF, XCOFF, NE and LX. These are found mainly used in Linux and Unix-like environment, gaming consoles and even some mobile phones.

Shared libraries (so files) are created from object files.

Files with o extension are mainly related to the object file format used by various programming languages and development environments.

How to open:

The source code can be viewed and edited in many specialized applications.

How to convert:

There is no way how to convert *.o files to other formats.