WAV to M4A Converter
Convert WAV to M4A locally in your browser, powered by Mediabunny and native WebCodecs — nothing is ever uploaded. Drop a WAV file below to get started.
Drop files, or click to browse
WAV files only — processed one at a time
Frequently asked questions
Is this WAV to M4A converter free?+
Yes, with no watermark, no account, and no daily limit.
Is my audio file uploaded anywhere?+
No — conversion runs locally using your browser's own built-in media codecs, entirely inside your browser tab.
Will I lose audio quality?+
Converting between compressed formats can lose a small amount of quality; converting to a lossless format like WAV or FLAC won't.
Is there a maximum file size?+
There's no fixed file-size limit since nothing is uploaded to a server. Processing time scales with the track's length rather than a hard cutoff.
How do I convert WAV to M4A?+
Drop your WAV file into the box above — it's decoded and re-encoded as M4A automatically, with a download ready in seconds.
About WAV and M4A
What is WAV?
WAV stores audio with no compression at all, which is why it's the standard format in recording studios and audio editing software.
Full WAV format guide →What is M4A?
M4A is an audio-only MPEG-4 container, most often holding AAC audio — it's what Apple Music and Voice Memos save by default.
Full M4A format guide →The short version: M4A gives you good compression efficiency, which helps once you run into WAV's biggest limitation: very large files — roughly 10MB per minute of CD-quality stereo audio. It's a natural move when your audio is headed toward voice memos and Apple Music downloads.
How it works
- 1
Drop your file in
Drag your audio onto the box above, or click it to browse — there's no account to create and no upload to wait on.
- 2
Pick your settings
The output format is already set for this page — just adjust any extra options shown, if there are any.
- 3
Download the result
Your browser processes everything locally and hands you a download link the moment it's done — nothing was ever sent to a server.
Is it private?
Everything happens locally, inside this browser tab. Your audio is read from disk, processed with WebAssembly running on your own device, and handed back to you as a download — it's never transmitted anywhere, so there's nothing to intercept and nothing stored on a server.
Common use cases
- Voice memos and Apple Music downloads
- Podcasts
- Prepping a podcast episode for a hosting platform
- Fitting a voice memo under a messaging app's size limit
Supported formats
This is one of many pairings the audio toolkit handles. In total it covers:
Related conversions
Format details
About WAV files+
WAV stores audio with no compression at all, which is why it's the standard format in recording studios and audio editing software.
WAV (Waveform Audio File Format) was created jointly by Microsoft and IBM in the early 1990s as a simple container for raw, uncompressed audio samples. Storing audio with no compression means there's never any generation loss from repeated saving and no decoding overhead when a program reads it, both of which matter enormously in a studio environment where a track might be opened, edited, and re-saved dozens of times before it's finished. The obvious tradeoff is size — a few minutes of CD-quality stereo audio can easily run to tens of megabytes — so WAV is rarely the format anyone actually distributes a finished track in.
How to open a WAV file
Opens readily in Any media player, Any web browser. For real editing, use Audacity (free), Pro Tools, Adobe Audition.
Good for
- lossless, full-fidelity audio
- no decoding overhead, ideal for editing
Watch out for
- very large files — roughly 10MB per minute of CD-quality stereo audio
About M4A files+
M4A is an audio-only MPEG-4 container, most often holding AAC audio — it's what Apple Music and Voice Memos save by default.
M4A is essentially an MPEG-4 container that's been restricted to audio only, and it's the extension Apple uses by default across iTunes downloads, Apple Music, GarageBand, and Voice Memos. In almost every practical case it holds AAC-encoded audio, so its quality and compression characteristics are effectively the same as AAC — it's really a matter of which extension a given piece of Apple software happened to save the file with.
How to open a M4A file
Opens readily in Any modern media player, iTunes/Apple Music, Most web browsers. For real editing, use Audacity (free), GarageBand.
Good for
- good compression efficiency
- native format across Apple apps
Watch out for
- occasionally needs converting for apps that only expect MP3
Need a different format? Try the full Audio Converter, or explore all audio tools.