Free online SAP to MP3 converter

Some players, editors, and sharing platforms accept MP3 but cannot play Atari SAP music files. Converting SAP to MP3 renders the chiptune playback as ordinary audio that those applications can handle.

What the SAP format is

SAP is a format for music written for Atari 8-bit computers. It stores playback instructions for the computers’ sound hardware rather than a recording of the sound, so a compatible player synthesizes the music during playback. SAP files are commonly used for Atari game and computer music.

What the MP3 format is

MP3 is a widely supported, lossy audio format. It is useful for portable playback, sharing, and editing in software that does not support Atari SAP files; its compressed files are generally smaller than uncompressed WAV files.

How to convert SAP to MP3

Online on 101convert.com

1. Upload the SAP file on the converter page. You can add several files for batch conversion; the per-file size limit is shown on the page.
2. Select MP3 and, before converting, set the bitrate, sample rate, and channel count if needed.
3. Start the conversion and download the resulting MP3 file or files. The conversion runs on the server with FFmpeg.

Offline with desktop software

For local conversion, use ASAP (Another Slight Atari Player), which can render Atari SAP music to WAV, then encode that WAV as MP3 with FFmpeg. Install the ASAP command-line converter asapconv and FFmpeg for your operating system, then run:

asapconv input.sap output.wav
ffmpeg -i output.wav -c:a libmp3lame -q:a 2 output.mp3

Replace the example filenames with your own. The FFmpeg quality setting -q:a 2 selects variable-bitrate MP3 encoding; use a different quality value if you need a smaller file or a different encoding trade-off.

Quality and limitations

Because SAP stores sound-generation instructions rather than recorded samples, playback depends on the player’s emulation of Atari sound hardware. The WAV intermediate captures that rendered playback; MP3 encoding then discards audio information, so keep the WAV if you need a lossless copy. Some SAP music has multiple songs or loops, and the rendered duration may depend on the selected track and playback settings.