AAC to WAV Converter
Convert AAC to WAV free — no upload, no signup
To convert AAC to WAV, drop your AAC audio files into the box below and click Convert. Fylo converts with ffmpeg running inside your browser, so nothing is uploaded and there's no signup or watermark. Decode AAC into uncompressed WAV for editing.
Drop audio files here
or tap to browse · paste with Ctrl+V · add many at once
Your files never leave your device
WAV is lossless — no bitrate to choose. Sample rate and channels are under Advanced.
Advanced
How to convert AAC to WAV
Add your AAC files
Drag and drop AAC files into the box or tap to choose them. The converter engine (about 31 MB) downloads once, the first time you convert.
Check the settings
WAV is lossless, so there's no bitrate to pick. Change sample rate or switch to mono under Advanced if a device needs it.
Convert and download
Click Convert, then download each WAV file or all of them as one ZIP.
Why convert AAC to WAV?
Editors and DAWs work best with WAV, and some can't import raw AAC.
What happens when you convert AAC to WAV?
The AAC is decoded to 16-bit PCM WAV, about 10 MB per minute.
How does Fylo convert AAC to WAV?
Fylo decodes the AAC audio in the AAC with ffmpeg compiled to WebAssembly and encodes it with 16-bit little-endian PCM with no compression. Nothing is added back: the WAV is an exact but larger copy of the decoded AAC (≈ 32 MB for a 3-minute song versus ≈ 3.6 MB at 160 kbps). The original sample rate and channel layout are kept unless you change them under Advanced.
What's the difference between AAC and WAV?
AAC (Advanced Audio Coding) was standardised in 1997 as part of MPEG-2 and later MPEG-4, designed to replace MP3. It achieves better quality at the same bitrate, especially below 128 kbps. A .aac file is usually a raw ADTS stream; the same audio inside an MP4 container is called M4A.
WAV was introduced by Microsoft and IBM in 1991 and, like AVI, uses the RIFF container. Most WAVs hold uncompressed PCM audio: CD quality (44.1 kHz, 16-bit, stereo) runs at 1,411 kbps, or about 10.6 MB per minute.
Learn more: AAC format guide · WAV format guide
| Property | AAC | WAV |
|---|---|---|
| Compression | Lossy | None (PCM) |
| Typical bitrate | 96–256 kbps | 1,411 kbps (CD quality) |
| 3-minute song | ≈ 3.6 MB at 160 kbps | ≈ 32 MB |
| Tags and cover art | Limited in raw .aac (full in M4A) | Limited |
| Compatibility | Very wide: Apple, Android, YouTube, browsers | Universal on computers; editors and DAWs |
| Best for | Efficient music and video soundtracks | Recording, editing, mastering |
| Introduced | 1997 | 1991 |
Frequently asked questions
Does converting AAC to WAV improve quality?
No. AAC is lossy, so detail removed during its compression can't be restored. The WAV is a lossless copy of what the AAC sounds like — bigger, but not better.
Which sample rate is used?
The AAC's original rate unless you change it.
Is my AAC file uploaded to a server?
No. Fylo runs ffmpeg, the same engine used by professional video tools, compiled to WebAssembly inside your browser. Your AAC file is read directly from your device and never sent anywhere.
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