Free online GYM to WAV converter

Some audio editors and players cannot open GYM game-music logs, so converting one to WAV makes the rendered music usable in standard audio workflows. WAV is also convenient for sharing or archiving a recording of the emulated playback.

What the GYM format is

GYM is a log of sound-chip register writes from Sega Genesis/Mega Drive games, not a recording of sampled audio. It was popularized by the Gens emulator, which can log game music in this format. A player or converter recreates the sound by emulating the console’s YM2612 chip and PSG.

What the WAV format is

WAV is an audio container commonly used for uncompressed PCM sound. Editors and media players widely support it, and PCM WAV avoids lossy compression, making it suitable for editing and archival copies. Unlike GYM, it contains rendered audio rather than instructions for recreating the game’s sound.

How to convert GYM to WAV

Online on 101convert.com

1. Upload the GYM file to the converter on this page. You can add several files for batch conversion; the per-file size limit is shown on the page.
2. Before converting, choose the sample rate and channel settings.
3. Start the conversion, which runs on the server with FFmpeg, then download the WAV file.

Offline with desktop software

On Windows, foobar2000 can handle GYM playback with the Game Emu Player component (foo_gep). Install the component through File → Preferences → Components → Install…, then open the GYM file with File → Open…. Right-click the loaded track, select Convert → …, choose WAV as the output format, and run the conversion. The component emulates the sound chip during playback.

Quality and limitations

The WAV captures the emulator’s rendering, not the original register-write log. The sound can vary with the emulator’s chip implementation; sample rate and channel choices affect the rendered file’s resolution and layout. Keep the original GYM if you need the music data in a form that can be replayed with a different emulator.