Free online IT to AAC converter

1. Source format: IT

IT is a tracker module format used by Impulse Tracker and compatible music players. It stores song data such as patterns, instruments, samples, effects, and playback instructions rather than a finished audio stream. IT files are common in the demoscene, retro game music, and tracker-based composition workflows. Because they are sequenced modules, they can sound different depending on the player and the sound set used.

2. Target format: AAC

AAC (Advanced Audio Coding) is a compressed audio format designed for efficient storage and good sound quality at relatively low bitrates. It is widely supported by phones, media players, streaming platforms, and editing software. AAC is a good choice when you want a compact, broadly compatible audio file for playback on modern devices.

3. How to perform the conversion

The most reliable way to convert IT to AAC is to first render the module to audio and then encode that audio to AAC. Since IT is a tracker format, the conversion is not a simple file rewrap; it requires playback synthesis.

Option 1: Use VLC Media Player and FFmpeg

1. Open the .it file in a player that can render tracker modules, such as VLC.
2. Play the file once to confirm it sounds correct.
3. Use FFmpeg to encode the module directly if your build supports the format, or first record/export the playback to a WAV file and then convert that WAV to AAC.
4. For direct conversion with FFmpeg, a typical command is ffmpeg -i input.it -c:a aac -b:a 192k output.m4a.
5. If direct decoding is not supported in your environment, export to WAV first, then run ffmpeg -i input.wav -c:a aac -b:a 192k output.m4a.

Option 2: Use a tracker player or module converter

1. Open the IT file in a tracker-capable application such as OpenMPT or another module player that can render to audio.
2. Choose File → Export → Wave or the equivalent audio export option.
3. Save the rendered audio as .wav.
4. Open the WAV file in an audio encoder such as FFmpeg or a DAW and export it to AAC, usually as .m4a.

Option 3: Convert online on 101convert.com

You can convert the file on 101convert.com for free, without installing any software. Upload the IT file, choose AAC as the output format, and download the converted audio when processing is complete.

4. Notes on quality, compatibility, or limitations

IT to AAC conversion is lossy. AAC compresses audio and may slightly reduce fidelity compared with the original module playback. If you need archival quality, keep the original .it file and also save an uncompressed .wav master.

Because IT files are tracker modules, the final sound depends on the player’s interpretation of effects, sample looping, interpolation, and instrument handling. A conversion made with one player may sound subtly different from another player.

For best results, use a high-quality renderer and export at a sufficiently high sample rate before AAC encoding. If you want maximum compatibility, save the output as .m4a, since that is the most common container for AAC audio.