Free online MUS to MID converter

Doom music files use the MUS format, which many standard MIDI editors do not open directly. Converting MUS to MID lets you edit or share the note and instrument events in MIDI-compatible software.

What the MUS format is

MUS is a compact music-sequence format used by Doom and some other games built on the Doom engine. Game music files commonly have the .mus extension; they store musical events rather than recorded audio.

What the MID format is

MID is a common extension for Standard MIDI Files. Sequencers and notation programs can use MIDI events for editing, arranging, and playback through a synthesizer. A MID file contains performance instructions, not the instrument sounds themselves.

How to convert MUS to MID

Online on 101convert.com

Upload the MUS file to the converter on this page, start the conversion, then download the MID file. The conversion runs on our server with denigma. You can convert several files in one batch; the per-file size limit is shown on the page.

Offline with desktop software

SLADE is a free Doom resource editor for Windows and Linux that can convert MUS entries to MIDI. Open the MUS file, select its entry, choose Convert to... from the context menu, select MIDI as the output format, and save the converted file.

Alternatively, use the mus2mid command-line utility if it is installed on your system: mus2mid "song.mus" "song.mid". Replace the filenames with the input and output paths.

Quality and compatibility

Conversion transfers the musical events; it does not render the original game’s sound into audio. Playback can sound different in a MIDI editor because the result uses that program’s synthesizer and instrument set. MUS supports a narrower set of music events than MIDI, so the conversion cannot add information that was not present in the source.