Convert MP3 to M4A
MP3 is great for sharing music, podcasts and ringtones that play on every device, but M4A is the better choice for high-quality music and voice recordings for Apple and Android devices. Convert MP3 to M4A in seconds, right in your browser.
- 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 MP3 to M4A
- 1
Tap Choose files and select one or more MP3 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.
MP3 vs M4A
Both formats are lossy, so the audio is re-encoded once. Pick High quality to keep it as close to the original as possible, or Small for the smallest file.
| MP3 | M4A | |
|---|---|---|
| Full name | MPEG-1 Audio Layer III | MPEG-4 Audio (AAC) |
| Type | Audio | Audio |
| Compression | Lossy | Lossy |
| Developed by | Fraunhofer IIS | Apple / MPEG |
| Introduced | 1993 | 2001 |
| Plays on iPhone | ✓ Yes | ✓ Yes |
| Plays on Android | ✓ Yes | ✓ Yes |
| Plays on Windows | ✓ Yes | ✓ Yes |
| Plays on Mac | ✓ Yes | ✓ Yes |
About MP3 and M4A
MP3: MP3 is the most widely supported audio format in the world. It uses lossy compression to make music and voice files small enough to share, while keeping quality good enough for everyday listening.
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 MP3 to M4A on my phone?
Will converting MP3 to M4A reduce quality?
Is this MP3 to M4A converter free?
Are my files uploaded to a server?
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