Convert AMR to M4A
Free, fast and secure — convert AMR to M4A right in your browser.
AMR
M4A
Convert AMR to M4A for wider compatibility
Converting AMR to M4A gives you a more widely supported file that opens cleanly across more devices, apps and platforms — handy when AMR will not play nicely everywhere.
How to convert AMR to M4A
- 1 Drop your AMR file into the converter above.
- 2 It is converted to M4A automatically — no settings to fiddle with.
- 3 Download your new M4A file instantly.
AMR vs M4A
| Feature | AMR | M4A |
|---|---|---|
| Compression | Lossy | Lossy |
| MIME type | audio/amr | audio/mp4 |
| Best for | Voice memos and phone recordings — converted to MP3 for wider playback. | High-quality music and voice on Apple devices and modern apps. |
About the formats
AMR
AMR voice audio
AMR is a speech-optimised audio format used for voice recordings and MMS on mobile phones. It makes tiny files for spoken word but is poor for music.
Strengths
- Tiny files for speech
- Made for voice recordings
- Common on phones
Limitations
- Poor quality for music
- Low bitrate only
- Limited app support
Best for: Voice memos and phone recordings — converted to MP3 for wider playback.
M4A
M4A (AAC) audio
M4A holds AAC audio, the default for Apple Music and iTunes. It generally sounds better than MP3 at the same bitrate and is well supported on modern devices.
Strengths
- Better quality than MP3 at equal size
- Default on Apple platforms
- Efficient, modern codec
Limitations
- Slightly less universal than MP3
- Lossy compression
- Occasional legacy-player issues
Best for: High-quality music and voice on Apple devices and modern apps.
Frequently asked questions
Upload your AMR file above and it is converted to M4A automatically. When it is ready, download your new M4A (AAC) audio — the whole thing takes just a few seconds in your browser.
Converting AMR to M4A gives you a more widely supported file that opens cleanly across more devices, apps and platforms — handy when AMR will not play nicely everywhere.
Converting between compressed formats can introduce minor changes, but our converter keeps your M4A looking as close to the original as possible.
Yes. The converter is free to use, with no watermark and no sign-up required.
Your files are processed securely and are never shared with anyone.