# Convert AMR to M4A

> Convert AMR to M4A online for free. Runs entirely in your browser, so your files never leave your device. Fast batch conversion, no sign-up, no watermarks.

URL: https://www.converterrr.com/amr-to-m4a

- Runs in the browser with FFmpeg (WASM): files are not uploaded, and no credits are used.
- Engines: FFmpeg (WASM) (browser), FFmpeg (cloud).
- API: available. `POST /api/v1/jobs` with `"output_format": "m4a"` (paid plans).
- More: [Audio converter](https://www.converterrr.com/audio-converter), [AMR converter](https://www.converterrr.com/amr-converter).

## How to convert AMR to M4A

1. **Add your AMR files.** Drag and drop AMR files onto the converter, paste them, or click to browse. You can add several at once.
2. **Choose M4A.** M4A is already selected. Open Options if you want to change quality, size or metadata.
3. **Convert.** Click Convert. Your files are converted right in your browser in seconds.
4. **Download your M4A.** Download each M4A file, or everything at once as a ZIP.

## Good to know

- We encode at a high-quality bitrate by default. Pick a specific bitrate or sample rate under Options.
- AMR files are typically used for voice recordings from older phones, while M4A is best for iTunes/Apple Music libraries and voice memos.
- This conversion runs on FFmpeg (WASM), running locally in your browser — nothing is uploaded and it works even on slow connections.

## AMR vs M4A

|  | AMR | M4A |
| --- | --- | --- |
| Full name | Adaptive Multi-Rate | MPEG-4 Audio |
| Type | Audio | Audio |
| Extensions | .amr | .m4a |
| MIME type | audio/amr | audio/mp4 |
| Best for | voice recordings from older phones | iTunes/Apple Music libraries and voice memos |
| Properties | lossy compression, legacy format | lossy compression |

**AMR:** AMR is a speech codec used by mobile phones for voice recordings and calls.

**M4A:** M4A is an audio-only MP4 file, usually containing AAC (or lossless ALAC). It's Apple Music's and Voice Memos' default format.

The other way around: [convert M4A to AMR](https://www.converterrr.com/m4a-to-amr).

## Related conversions

- [M4A to AMR](https://www.converterrr.com/m4a-to-amr) (cloud)
- [AMR to MP3](https://www.converterrr.com/amr-to-mp3) (in the browser)
- [MP3 to M4A](https://www.converterrr.com/mp3-to-m4a) (in the browser)
- [AMR to WAV](https://www.converterrr.com/amr-to-wav) (in the browser)
- [MP4 to M4A](https://www.converterrr.com/mp4-to-m4a) (in the browser)
- [WAV to M4A](https://www.converterrr.com/wav-to-m4a) (in the browser)
- [AMR to FLAC](https://www.converterrr.com/amr-to-flac) (in the browser)
- [MOV to M4A](https://www.converterrr.com/mov-to-m4a) (in the browser)
- [AMR to AAC](https://www.converterrr.com/amr-to-aac) (in the browser)
- [WebM to M4A](https://www.converterrr.com/webm-to-m4a) (in the browser)
- [AMR to OGG](https://www.converterrr.com/amr-to-ogg) (in the browser)
- [FLAC to M4A](https://www.converterrr.com/flac-to-m4a) (in the browser)

## Convert AMR to other formats

[AMR to MP3](https://www.converterrr.com/amr-to-mp3), [AMR to WAV](https://www.converterrr.com/amr-to-wav), [AMR to FLAC](https://www.converterrr.com/amr-to-flac), [AMR to AAC](https://www.converterrr.com/amr-to-aac), [AMR to OGG](https://www.converterrr.com/amr-to-ogg), [AMR to Opus](https://www.converterrr.com/amr-to-opus), [AMR to WMA](https://www.converterrr.com/amr-to-wma), [AMR to AIFF](https://www.converterrr.com/amr-to-aiff), [AMR to M4B](https://www.converterrr.com/amr-to-m4b), [AMR to AC3](https://www.converterrr.com/amr-to-ac3), [AMR to MP2](https://www.converterrr.com/amr-to-mp2), [AMR to WEBA](https://www.converterrr.com/amr-to-weba), [AMR to OGA](https://www.converterrr.com/amr-to-oga), [AMR to MKA](https://www.converterrr.com/amr-to-mka), [AMR to WV](https://www.converterrr.com/amr-to-wv), [AMR to AU](https://www.converterrr.com/amr-to-au), [AMR to TTA](https://www.converterrr.com/amr-to-tta)

## Convert other formats to M4A

[MP3 to M4A](https://www.converterrr.com/mp3-to-m4a), [MP4 to M4A](https://www.converterrr.com/mp4-to-m4a), [WAV to M4A](https://www.converterrr.com/wav-to-m4a), [MOV to M4A](https://www.converterrr.com/mov-to-m4a), [WebM to M4A](https://www.converterrr.com/webm-to-m4a), [FLAC to M4A](https://www.converterrr.com/flac-to-m4a), [MKV to M4A](https://www.converterrr.com/mkv-to-m4a), [AAC to M4A](https://www.converterrr.com/aac-to-m4a), [AVI to M4A](https://www.converterrr.com/avi-to-m4a), [OGG to M4A](https://www.converterrr.com/ogg-to-m4a), [WMV to M4A](https://www.converterrr.com/wmv-to-m4a), [Opus to M4A](https://www.converterrr.com/opus-to-m4a), [WMA to M4A](https://www.converterrr.com/wma-to-m4a), [M4V to M4A](https://www.converterrr.com/m4v-to-m4a), [3GP to M4A](https://www.converterrr.com/3gp-to-m4a), [FLV to M4A](https://www.converterrr.com/flv-to-m4a), [MPEG to M4A](https://www.converterrr.com/mpeg-to-m4a), [AIFF to M4A](https://www.converterrr.com/aiff-to-m4a), [TS to M4A](https://www.converterrr.com/ts-to-m4a), [MPG to M4A](https://www.converterrr.com/mpg-to-m4a), [M4B to M4A](https://www.converterrr.com/m4b-to-m4a), [MTS to M4A](https://www.converterrr.com/mts-to-m4a), [VOB to M4A](https://www.converterrr.com/vob-to-m4a), [M2TS to M4A](https://www.converterrr.com/m2ts-to-m4a)

## AMR to M4A: frequently asked questions

### How do I convert AMR to M4A?

Drop your AMR file onto the converter above, make sure M4A is selected, and click Convert. When it's done, download the M4A file — it usually takes a few seconds.

### Is it safe to convert AMR to M4A here?

Yes. AMR to M4A conversion happens entirely inside your browser using WebAssembly, so your file is never uploaded to any server.

### Is the AMR to M4A converter free?

Yes — free with no watermark. Signed-out visitors can convert 25 files a day, and a free account raises that to 250.

### Will converting AMR to M4A reduce quality?

M4A is a lossy format, but our defaults are tuned to be visually indistinguishable for most files. You can raise the quality under Options.

### Can I convert multiple AMR files at once?

Yes. Add up to 5 files at a time without an account, 10 with a free account and up to 500 on paid plans, then download them individually or as a single ZIP.

### Can I convert M4A back to AMR?

Yes — use our M4A to AMR converter. Note that converting back and forth between formats can't recover detail lost to lossy compression.