Convert Advanced Audio Coding (.aac) to Waveform Audio (.wav) online for free. Fast, secure audio conversion with no watermarks or registration.
Conversion settings — add a file to adjust
Upload your .aac file by dragging it into the upload area or clicking to browse.
Choose your output settings. The default settings work great for most files.
Click Convert and download your .wav file when it's ready.
AAC delivers compressed audio at 128-256 kbps, while WAV (Waveform Audio) is Microsoft and IBM's uncompressed audio format from 1991. WAV stores raw PCM samples at full fidelity, making it the universal baseline for audio editing, mastering, and processing. Converting AAC to WAV decodes the compressed audio to raw PCM, producing a file that every audio application on every platform can read without codec dependencies.
Professional audio tools universally accept WAV as input. DAWs like Ableton Live, FL Studio, Reaper, and Audacity work most reliably with WAV files. When you need to edit, process, or master audio, starting from WAV eliminates codec-related issues entirely. WAV is also the standard format for CD burning, broadcast audio, and sample libraries used in music production.
FFmpeg decodes the AAC stream to PCM and writes it as a WAV file with a standard RIFF header. The default output is 16-bit signed integer PCM at the source sample rate (typically 44.1 or 48 kHz). 24-bit and 32-bit float outputs are also available. A 4-minute stereo AAC track at 256 kbps (~8 MB) expands to approximately 40 MB as 16-bit 44.1 kHz WAV.
The conversion preserves every sample decoded from AAC — no additional quality loss occurs. WAV stores the exact PCM values output by the AAC decoder. The quality ceiling is the AAC source; WAV cannot restore information discarded during AAC encoding.
| Device | AAC | WAV |
|---|---|---|
| Windows PC | Partial | Native |
| macOS | Native | Partial |
| iPhone/iPad | Native | Partial |
| Android | Partial | Partial |
| Linux | Partial | Partial |
| Web Browser | No |
Resolution: N/A
Bitrate: 320 kbps
OGG Vorbis preferred
Resolution: N/A
Bitrate: 256 kbps
AAC format required
Resolution: N/A
Bitrate: 128 kbps
Lossless FLAC/WAV for best quality
Resolution: N/A
Bitrate: 128 kbps
MP3 mono for spoken word
AAC to WAV is the standard path to editable, uncompressed audio. The resulting WAV file works in every audio application and serves as the ideal starting point for any processing chain.
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Mikä tahansa selain, mikä tahansa laite
| Native |
| Ominaisuus | AAC | WAV |
|---|---|---|
| Koko nimi | Advanced Audio Coding | Waveform Audio File Format |
| Tiedostopääte | .aac | .wav |
| Paras käyttökohde | Superior to MP3 | Lossless quality |