Free online NSFE to WAV converter

Audio editors and devices that do not read NES music files need a rendered waveform instead. Converting an NSFE track to WAV also makes it possible to edit or share the music with standard audio tools.

What the NSFE format is

NSFE (Nintendo Sound Format Extended) stores music data for the Nintendo Entertainment System’s audio hardware, along with extended metadata such as track titles and track order. It is used for archived or ripped NES game music, rather than for recorded sound; playback software emulates the console’s sound chips to produce audio. You are most likely to encounter NSFE files in game-music collections or when using an NES music player.

What the WAV format is

WAV is a container commonly used for uncompressed PCM audio. Audio editors, media players, and many devices support it, and its uncompressed output is convenient for editing and further processing. WAV files are generally much larger than the original NSFE data.

How to convert NSFE to WAV

Online on 101convert.com

1. Open the NSFE-to-WAV converter on 101convert.com and upload your file. Multiple files can be added for batch conversion; the page shows the per-file size limit.
2. Before converting, choose the desired sample rate and number of channels.
3. Start the conversion, then download the resulting WAV file or files.

The converter uses FFmpeg on its server.

Offline with desktop software

On Windows, foobar2000 can convert NSFE through the free Game Emu Player component. Install the component, open the NSFE file in foobar2000, select the track in the playlist, then choose right-click → Convert → …. In the conversion setup, select WAV output and PCM encoding, choose a destination, and start the conversion. Repeat for other tracks if you want separate WAV files.

Quality and track length

An NSFE file contains playback instructions, not a recorded waveform, so the WAV is newly rendered by an emulator. A tune that loops may not have a natural ending; check the exported duration and set a finite track length in the player or conversion settings when available. Higher sample rates do not recover detail absent from the original NES sound generation.