How to Convert M4A to WAV online
M4A is AAC audio in an MPEG-4 container – the format of iPhone Voice Memos and many downloads. Drop your M4A below to save it as a WAV – and trim it on the waveform first if you like. It all happens on your any device.
Drop an audio file here
MP3, WAV, M4A, OGG, FLAC… · nothing is uploaded
Trimmed on your device. Your audio is never uploaded.
Step by step: Convert M4A to WAV online
- 1
Open this page in any modern browser – Chrome, Safari, Edge or Firefox, on a computer or phone.
- 2
Drop your file onto the box above, or click it to choose a file.
- 3
The whole file is selected by default. Drag the handles on the waveform only if you want to cut it.
- 4
Choose WAV as the format, then download. Click Download to save the result. It goes wherever your browser saves downloads.
What changes when you convert M4A to WAV
- WAV is uncompressed, so the file will be much bigger than the M4A (about 10 MB per minute of stereo) – that's normal.
- WAV can't add back detail the M4A didn't have, but editors and DAWs handle it without any decoding problems.
About M4A and WAV
- M4A is AAC audio in an MPEG-4 container – the format of iPhone Voice Memos and many downloads. Some Windows apps, older MP3 players, car stereos and upload forms won't take it.
- WAV is uncompressed audio – exact quality, but about 10 MB per minute of stereo sound. Audio editors, DAWs and some upload forms ask for WAV.
Good to know
- Nothing is installed and there's no account. The conversion runs in your browser tab, so it works the same on Windows, Mac, Linux, iPhone, Android and Chromebook.
- The file is decoded by your browser's built-in audio support. If one browser can't open it, try Chrome or Firefox.
M4A vs WAV
| M4A | WAV | |
|---|---|---|
| Compression | Lossy (AAC) or lossless (ALAC) | None (PCM) |
| Best for | Voice memos and Apple devices | Editing, mastering and sound effects |
| Support | Apple devices and most browsers; patchy on older players | Universal on computers |
Frequently asked questions
Does converting M4A to WAV reduce quality?
No. WAV is uncompressed, so no further quality is lost.
Can I cut the audio at the same time?
Yes. Drag the start and end handles on the waveform, preview it, and add a fade in or out if you want.
Is my audio uploaded to a server?
No. The conversion runs in your browser using your device's own processor, so your audio never leaves your device. You can even disconnect from the internet once the page has loaded.
Need more options? Open the full Audio Trimmer tool →