Convert M4A to AMR
Free and instant — your M4A files are processed securely on our servers and deleted right after conversion. Nothing is stored.
How to convert M4A to AMR
- Step 01
Add your M4A files
Drop them into the box above or click to browse. You can add several files at once.
- Step 02
Conversion starts instantly
Your file is sent to our servers, converted and deleted right away — no sign-up, no queue, no waiting.
- Step 03
Download your AMR files
Save each file individually or grab them all at once. Done.
Why convert M4A to AMR?
Convert M4A to AMR quickly and privately — every file is processed on our servers with ffmpeg and deleted immediately afterward, so you get a AMR file that plays wherever AMR is expected.
M4A vs AMR at a glance
M4A is AAC audio in an MPEG-4 container — the format used by iTunes and Apple Music, same quality as AAC with slightly better metadata support. AMR is the codec built for phone calls — optimized for speech at very low bit rates, but rarely playable outside dedicated voicemail or call-recording apps.
| Property | M4A | AMR |
|---|---|---|
| Extension | .m4a | .amr |
| Full name | MPEG-4 Audio | Adaptive Multi-Rate |
| First released | 2001 | 1999 |
| Developed by | Apple / ISO | 3GPP / Ericsson |
| Compression | Lossy | Lossy |
| Transparency | No | No |
| Animation | No | No |
| Best for | music purchased or downloaded from Apple services | old voicemails and voice recordings from feature phones and early smartphones |
M4A to AMR — frequently asked questions
Is this M4A to AMR converter really free?
Yes — completely free, with no sign-up, no watermarks and no daily limits.
Will I lose quality converting to AMR?
AMR uses lossy compression, so the image is re-encoded at high quality (92%). For photos the difference is practically invisible; for text-heavy graphics or logos, a lossless format like PNG preserves sharp edges better.
Is the conversion private?
Audio conversion runs on our servers with ffmpeg — your file is deleted immediately and never stored.
Related conversions
Need the reverse? Convert AMR to M4AExplore the AMR converter