How to use it
- Drop your M4A or AAC files.
- Tick Mono for voice recordings if you like.
- Click Convert to WAV and download.
When you need WAV instead of M4A
M4A (AAC) is compact and sounds good, but some tools insist on WAV: audio editors and DAWs on older systems, transcription and speech-recognition services, samplers, phone systems and some voice-over platforms. WAV is uncompressed, so it opens everywhere and can be edited repeatedly without extra loss.
The output is CD-standard 16-bit, 44.1 kHz PCM. A WAV is much larger than the M4A it came from: about 10 MB per minute in stereo, or 5 MB in mono. For voice memos, ticking Mono is usually the right choice.
Batch conversion and privacy
Select several files at once; each WAV keeps the original name and multiple results arrive in one ZIP. Converting doesn't add quality that the M4A didn't have, it just stores the same sound uncompressed.
All processing happens in your browser and nothing is uploaded. If you want a smaller, widely compatible file instead, use M4A to MP3.
Frequently asked questions
Can I convert iPhone voice memos to WAV?
Yes. Save the memo to Files, open this page on your phone or computer, and drop the M4A file.
What sample rate is the WAV?
44.1 kHz, 16-bit, the CD standard.
Will the WAV sound better than the M4A?
No, it sounds the same. WAV is simply uncompressed and more widely accepted by editing tools.
Last updated: November 12, 2026