Home : File Types : COM File

.COM File Extension

File TypeDOS Command File

3.9 (134 Votes)
CategoryExecutable Files

What is a COM file?

A COM file is an executable program capable of being run by MS-DOS and Windows. It is saved in a binary format and is similar to an .EXE file, but differs in that it has a maximum size of roughly 64KB and it has no header or metadata. COM files are commonly used for executing a set of instructions whereas EXE files are used for fully developed programs.

More Information

Both DOS and Windows have used the ".com" extension for many years, and the ".com" extension shouldn't be confused with the ".com" Internet domain name.

NOTE: If a folder includes both EXE and COM files with the same filename (e.g., run.exe and run.com), the DOS or Windows command prompt will run the COM file if you type the filename without the extension.

Common COM Filenames

COMMAND.COM - The Windows shell program used by DOS and Windows 95, 98, and Me. It was replaced by cmd.exe in later versions of Windows.

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Programs that open COM files
Updated 8/18/2016

About COM Files

Our goal is to help you understand what a file with a *.com suffix is and how to open it.

The DOS Command file type, file format description, and Mac and Windows programs listed on this page have been individually researched and verified by the FileInfo team. We strive for 100% accuracy and only publish information about file formats that we have tested and validated.

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