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Convert AAC to WAV

Convert AAC to WAV in seconds. Free, no signup, no watermark, no file-size limit. Your file is processed in your browser and never uploaded.

At a glance

Source
AAC
Target
WAV
Where it runs
Your browser
Cost
Free, unlimited
Account
Not needed
AAC

Converter

AAC to WAV

On device

Drop one or more aac audio files.

or select aac audio

Your file never leaves this browser

    The details

    What happens when you convert between audio formats

    Advanced Audio Coding. What iTunes, YouTube and most streaming use. The audio is decoded, and optionally resampled or re-encoded, into the target container and codec. The result is a uncompressed audio. the raw recording, exactly as it was captured, produced entirely inside your browser.

    What survives

    • The duration and the timing
    • The audio itself, to the quality the target codec allows

    What changes

    • The quality, because every codec that is not PCM is lossy
    • The metadata, which is usually rebuilt rather than copied

    Where it goes wrong

    • Converting to a lossy format more than once is the fastest way to make audio sound bad
    • The sample rate is often left as it was, so a 44.1 kHz file stays 44.1 kHz even if the target prefers 48 kHz

    Why anyone would do this

    The same recording, in a container the device in your hand will actually play.

    About the format

    Advanced Audio Coding.

    A series of MPEG-4 audio frames, each carrying a window of transformed, quantised spectral data.

    Where it is good
    • Better quality than MP3 at the same bitrate
    • The native format of iPhones, iPads and the Apple ecosystem
    • Works with the same .m4a container as video
    Where it falls short
    • Slightly less support on old desktop software
    • Still lossy
    • Can carry DRM in the commercial ecosystem
    You will find it on
    Apple devices, YouTube, podcasts, streaming services

    The thing people miss

    The extension .m4a and the codec AAC are not the same thing — .m4a is the container, and that container can hold other codecs too.

    About the target

    Uncompressed audio.

    A RIFF container with a fmt chunk describing the sample rate and bit depth, and a data chunk holding the samples themselves.

    • No loss at all — the samples are exactly what was recorded
    • Every editor and every system understands it
    • Perfect for editing before a final lossy encode

    Real jobs

    What people are actually doing with AAC

    A recording from an iPhone that will not play in older software

    A voice note that needs to be smaller

    Matching the format of a video file for the same event

    Specification

    The details, in one table

    Source formatAAC — AAC audio
    Target formatWAV — WAV audio
    Typical source size1–8 MB per track
    RunsIn your browser
    Account neededNo
    WatermarkNone
    File extension.aac .m4a → .wav

    How to

    AAC to WAV, step by step

    1. 01

      Add your aac audio

      Drag the file onto the drop zone, or tap to browse. Only one file is needed.

    2. 02

      Choose the WAV settings

      Set the WAV-specific options — everything happens locally, so the speed is your device, not a queue.

    3. 03

      Download the result

      The finished WAV downloads to your device. Nothing is uploaded and nothing is retained.

    Also available

    AAC converts into

    Queued for the servers

    MP3MP3 audio

    Questions

    AAC conversion questions

    What actually happens to my AAC file when I convert it to WAV?

    The audio is decoded, and optionally resampled or re-encoded, into the target container and codec. So the AAC file is unpacked, the content is laid out, and the result is written out as WAV. The duration and the timing survives unchanged.

    Will converting AAC to WAV reduce the quality?

    Partly. The quality, because every codec that is not PCM is lossy The text itself is never re-typed, so no words are lost.

    Is my AAC file uploaded to a server?

    No. This AAC to WAV conversion runs as JavaScript inside your browser tab. The file is read from your device and the result is written back to your device, so there is no upload step, no file-size limit and no copy of your AAC file on any server.

    Do I need an account or will there be a watermark?

    Neither. There is no sign-up step, no email capture and no watermark on the output. The only limits are the ones your own device imposes.

    What is the most common mistake people make when converting AAC to WAV?

    Converting to a lossy format more than once is the fastest way to make audio sound bad

    Why would somebody convert AAC to WAV at all?

    The same recording, in a container the device in your hand will actually play. In short: a recording from an iphone that will not play in older software

    Something most people do not know about AAC?

    The extension .m4a and the codec AAC are not the same thing — .m4a is the container, and that container can hold other codecs too.