WAV to M4A Converter

Runs in your browser — your files are never uploaded.

Convert WAV to M4A, the AAC-in-MP4 format Apple devices use throughout. AAC sounds better than MP3 at the same bitrate and lands natively in Music, Voice Memos, iMovie and GarageBand without a conversion step. A good default for shrinking a big WAV when the audio is destined for an iPhone, iPad or Mac. Runs entirely in your browser.

OptionsBitrate: Default — best quality for size

How to convert WAV to M4A

  1. 1

    Drop your .wav file onto the box, or click to choose one.

  2. 2

    OkConverter loads the conversion engine (one-time per session) and encodes AAC at 192kbps.

  3. 3

    Click “Download” to save the .m4a file.

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Frequently asked questions

What is the difference between M4A and MP4?+

The container is the same; the extension is the convention. .m4a signals audio only, so players open it in a music app rather than launching a video window. Rename one to the other and it still plays.

Is M4A better than MP3?+

Technically yes — AAC generally sounds better than MP3 at an equal bitrate, and it is the default across Apple devices and YouTube. MP3 still has broader support on old hardware, so choose MP3 for a decades-old car stereo.

What bitrate is used?+

192kbps AAC, which is transparent for most material and roughly a tenth the size of the source WAV.

Will this play on Android and Windows?+

Yes. Despite the Apple association, AAC in an MP4 container is supported by Android, Windows, every major browser, and essentially all current players.

Is my file uploaded anywhere?+

No. Once the engine has loaded, the whole conversion happens inside your browser tab.

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