Convert MP4 to M4A
Extract the audio from MP4 videos and save it as M4A — ideal for high-quality music and voice recordings for Apple and Android devices.
- No upload — 100% private
- Fast, lossless when possible
- Free & unlimited
- Works on iPhone & Android
Keep this tab open — the conversion runs on your device, nothing is uploaded.
Add more files above to keep converting.
How to convert MP4 to M4A
- 1
Tap Choose files and select one or more MP4 files (or drag them in).
- 2
Check that M4A is selected. Use Advanced options for bitrate, channels or trimming.
- 3
Press Convert. Everything happens on your device — no upload, no waiting in a queue.
- 4
Your M4A downloads automatically. Converting several files? Grab them all as a ZIP.
MP4 vs M4A
Only the sound is kept — the picture is dropped, so the M4A file is far smaller than the MP4 video. Phone videos usually carry AAC audio, so in Smart mode the M4A is extracted instantly with zero quality loss.
| MP4 | M4A | |
|---|---|---|
| Full name | MPEG-4 Part 14 | MPEG-4 Audio (AAC) |
| Type | Video | Audio |
| Compression | Lossy | Lossy |
| Developed by | MPEG | Apple / MPEG |
| Introduced | 2001 | 2001 |
| Plays on iPhone | ✓ Yes | ✓ Yes |
| Plays on Android | ✓ Yes | ✓ Yes |
| Plays on Windows | ✓ Yes | ✓ Yes |
| Plays on Mac | ✓ Yes | ✓ Yes |
About MP4 and M4A
MP4: MP4 is the universal video format. With H.264 video and AAC audio it plays on every iPhone, Android phone, smart TV, browser, WhatsApp, Instagram and YouTube.
M4A: M4A is an MPEG-4 container holding AAC audio. It sounds better than MP3 at the same size and is the default format for iPhone voice memos, Apple Music downloads and many Android recorders.
Frequently asked questions
How do I convert MP4 to M4A on my phone?
Will converting MP4 to M4A reduce quality?
Can I convert only part of the MP4?
Is this MP4 to M4A converter free?
Are my files uploaded to a server?
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