Free online MUS to MIDI converter

Doom music files use MUS, which many MIDI editors and sequencing tools do not accept directly. Converting to MIDI lets you inspect or edit the note and controller events in software that supports Standard MIDI Files.

What the MUS format is

MUS is a music-event format created for Doom and used by Doom-engine games. It stores musical events rather than recorded audio, and is commonly found in game WAD files or as a standalone soundtrack file.

What the MIDI format is

MIDI stores performance instructions such as notes, timing, instrument-program changes, and controller events; it does not contain the instrument audio itself. MIDI files are supported by many sequencers, notation programs, and hardware devices, so they are useful for editing, arranging, and sharing musical parts.

How to convert MUS to MIDI

Online on 101convert.com

1. Select the MUS file on the converter page and upload it. Several files can be added for batch conversion; the page shows the per-file size limit.
2. Start the conversion. The conversion runs on the site's server with denigma.
3. Download the resulting MIDI file or files.

Offline with desktop software

For a free command-line option, use the Doom utility mus2mid. In a terminal or command prompt, run mus2mid input.mus output.mid, replacing the filenames with your paths. The original utility is a DOS program; on a current Windows, macOS, or Linux computer, run it in DOSBox if you have the DOS executable. Some builds use different command-line syntax, so check that build's help output if the command is rejected.

Quality and compatibility

The conversion transfers musical events, not the original game audio or its exact sound. The MIDI player supplies its own instrument sounds, so timbre and playback can differ. MUS has game-oriented channel and event constraints; check the converted file in your target editor, especially if it contains percussion or instrument changes.