M4A to WAV Converter
Turn iPhone voice memos and M4A audio into WAV for editors, DAWs and transcription.
Convert your file
M4A → WAVHow it works
- Choose an M4A fileVoice memos, recordings and music in M4A all work.
- ConvertYour browser decodes the audio and writes a WAV file. If it cannot, we ask before using our server.
- DownloadSave the WAV. Expect it to be roughly ten times larger than the M4A.
Supported formats
Files your browser cannot read are converted on our server instead.
About this tool
Audio editors, transcription services, samplers and some DAWs prefer WAV, while iPhones save voice memos and many recordings as M4A. This converter decodes your M4A and writes a standard 16-bit PCM WAV file, keeping mono recordings mono and stereo recordings stereo.
When your browser can read the file, which most current browsers can for ordinary M4A audio, the whole conversion happens on your device and nothing is uploaded. Browser conversions are saved at 44.1 kHz. If your browser cannot decode a particular file, you can choose to convert it on our server instead, where it is deleted within 30 minutes.
Questions people ask
Why is the WAV so much bigger?
Will the WAV sound better than the M4A?
Does it work with Apple Lossless (ALAC) files?
M4A vs WAV
| M4A | WAV | |
|---|---|---|
| Full name | MPEG-4 Audio, usually AAC inside | Waveform Audio File Format |
| Compression | Lossy (AAC) or lossless (ALAC) | Uncompressed (PCM) |
| Typical file size | About 1 MB per minute at 128 kbps | About 10 MB per minute (16-bit, 44.1 kHz stereo) |
| Best for | iPhone voice memos, Apple Music and iTunes files, podcasts | Editing, mastering, samplers and DJ software |
| Works with | Apple devices, Android and browsers; some older players and upload forms refuse it | Every audio editor and most players |