S3M is the ScreamTracker 3 module format — the sound of DOS-era demoscene and shareware-game soundtracks.
Typical use: Convert S3M modules to MP3 or WAV.
About the S3M format
S3M is ScreamTracker 3's module format — the 1994 standard that carried PC demo music past the AdLib's FM chip into sampled instruments, with PCM samples, FM instruments or both in one file. Half the classic DOS game soundtracks you remember were S3Ms.
Conversion renders the module through the tracker engine to MP3 or WAV — the FM-vs-sample mix is resolved exactly the way the composer intended, frozen into a universally playable waveform.
Strengths
- ✓ FM + PCM hybrid instruments
- ✓ Iconic DOS-era game soundtracks
- ✓ Well-specified, stable format
Limitations
- ✗ Pattern limits of 1994
- ✗ FM playback differs across engines
- ✗ Adlib-specific quirks may differ
- Structure
- S3M header + para-pointer patterns
- Types / schema
- Tracker module (PCM/FM hybrid)
- Compatibility
- libopenmpt, ST3, ffmpeg
- Best for
- DOS game soundtrack conversion
Convert S3M to…
27 direct directions plus 18 workflows, sorted A–Z; 🔥 marks popular targets.
Frequently asked questions
What is a S3M file?
S3M is the ScreamTracker 3 module format — the sound of DOS-era demoscene and shareware-game soundtracks.
How do I convert S3M files online?
Pick a target format from the "Convert S3M to…" list below, drop your file and hit convert. Everything runs in your browser — no install, no upload, no watermark, no limits.
Is it safe to convert S3M files here?
Yes. Every conversion is performed by your own device inside the browser — files never leave for a server, and the page keeps working even offline.
Which formats can S3M convert to?
This page lists all 45 directions across documents, images, audio, video, spreadsheets and archives — each one is its own free converter page.