Convert M4A to WAV
Apple audio unpacked for editors and audio tools — decoded to WAV on your own device.
Drop your video or audio here
or
MP4, MOV, WebM, MKV, AVI, MP3, WAV and more — any size, no upload
🔒 Files never leave your device — everything runs in your browser.
The M4A files that iPhones and Macs produce — voice memos, GarageBand bounces, iTunes tracks — regularly need to enter software that wants WAV: audio editors, DAWs, transcription services, broadcast systems. WAV is the least-common-denominator format that all of them accept without a murmur.
The conversion decodes the M4A's audio to uncompressed PCM exactly as a player would render it — nothing further is lost, and nothing can be regained; the WAV simply carries the M4A's sound in a container every tool opens. It happens entirely in your browser, so private memos stay private.
How it works
- Drop your file
Any common format, any size. Nothing is uploaded — the tool runs in your browser.
- Convert
Compatible files are repackaged instantly with zero quality loss; others are hardware-transcoded at high quality.
- Download
Your converted file is ready on your device — nothing to wait for, nothing to delete from a server.
Frequently asked questions
Does converting M4A to WAV restore full quality?
It preserves, not restores: the WAV holds exactly what the M4A contained, decoded — no additional loss ever, but also nothing the original compression removed. For editing purposes that is precisely what you want.
Why do transcription services prefer WAV uploads?
Uncompressed audio removes a whole class of decoding problems on their end and gives speech models the cleanest possible signal. Converting first also proves the file is intact before it enters a paid workflow.
How big will the WAV be?
Around 10 MB per stereo minute regardless of how small the M4A was — uncompressed formats size by duration, not by source. A one-hour memo lands near 600 MB, so convert what the task needs.
Is my file uploaded to a server?
No. ConvertUno runs entirely in your browser on your own device. Your file never leaves your computer or phone — there is no upload at all.
Is it really free, with no watermark?
Yes. Processing happens on your device, so serving you costs us almost nothing — no watermark, no account, no file-size limit, no daily quota.