WAV to M4A Converter

Compress uncompressed WAV audio into the M4A format — right in your browser.

Browser Processing Only (Offline Ready)

WAV takes a lot of space. M4A wraps efficient AAC audio in a compact file that works smoothly across iPhone, iTunes, and most music apps.

This tool converts WAV to M4A locally. Your file is never uploaded.

How to convert WAV to M4A

1Drop your WAV file into the area above — or click to browse.
2The output format is already set to M4A. Adjust the quality settings if the format supports them.
3Click convert, then download your M4A file. Everything runs locally — nothing is uploaded.

M4A is the container; AAC is the audio codec inside it. In practice, an M4A file usually contains AAC audio.

M4A is lossy, so there's some compression versus the WAV. A higher bitrate keeps the result close to the original.

No. All processing happens entirely in your browser. Your data never leaves your device — nothing is uploaded to any server.

Yes. Once the page has loaded, the tool works completely offline. For the best experience, install PrivaDeck as a PWA from your browser.

Open the full audio converter to pick from MP3, WAV, OGG, AAC, FLAC, M4A and Opus, convert in batches, and adjust bitrate, sample rate and channels.