M4A to WAV converter online — free
Quick answer Turn an .m4a file — such as an iPhone Voice Memo — into an uncompressed WAV for editing or software that doesn't accept M4A.
Change format and bitrate. Accepts MP3, WAV, OGG, M4A, FLAC, AAC, Opus, AMR and WMA — 15MB max (Pro: 20MB). Use a preset for common jobs.
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Convert M4A to WAV online for free with VoxCraft. Upload an .m4a file, keep WAV selected, and download an uncompressed file that works in editors, DAWs and tools that reject M4A — no install and no signup on the free tier.
M4A is an audio file in the MP4 container, usually AAC-compressed. iPhone Voice Memos, iTunes/Apple Music downloads and many voice recorders produce it. It is great for storage, but some editing software, game engines and transcription or speech tools want plain WAV.
WAV stores audio uncompressed, so the file will be several times larger than the M4A. That's expected. It doesn't bring back detail lost to AAC compression; what it does is stop further quality loss while you edit.
A common workflow: convert to WAV, trim or clean the recording, then export a final MP3 or M4A at the end. See trim and noise reduction.
How it works
- Upload your .m4a file (15MB max, 20MB with Pro).
- Leave the output format on WAV.
- Tap Convert and wait a moment.
- Download the WAV file.
Who uses this
iPhone Voice Memos
Get a WAV from a voice memo for an editor that doesn't take M4A.
Editing and mastering
Work from an uncompressed file while you trim, clean and level audio.
Software compatibility
Satisfy tools that only accept WAV input.
Tips for better results
- Expect a WAV to be many times the size of the original M4A.
- A 15MB upload limit applies to the M4A you upload, not to the WAV you receive.
- Keep the original M4A; the WAV can't recreate detail the AAC encode removed.
- Export to MP3 only once at the end to avoid stacking lossy re-encodes.
Frequently asked questions
What is an M4A file?
An audio file stored in the MP4 container, usually compressed with AAC. Apple devices use it widely.
Why convert M4A to WAV?
For editing software, DAWs and tools that need plain uncompressed audio.
Does WAV sound better than M4A?
Not by itself. WAV avoids further compression, but it can't restore what the original M4A discarded.
Why is the WAV so large?
WAV is uncompressed, so size grows with duration. That's normal.
Is it free?
Yes within free-tier limits, with no account required to start.
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