Convert M4A to AMR Online — Free
Fast, free M4A to AMR converter. No registration required.
Drop files here or click to browse
Supports: M4A files
Max: 100MB (free) · 2GB (Pro)
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How to Convert
Upload your .m4a file by dragging it into the upload area or clicking to browse.
Choose your output settings. The default settings work great for most files.
Click Convert and download your .amr file when it's ready.
What is M4A?
M4A is an audio-only MPEG-4 container, commonly using AAC encoding. It provides better quality than MP3 at similar file sizes.
Format Details
- Full Name
- MPEG-4 Audio
- Extension
- .m4a
Key Features
- Better than MP3
- Apple ecosystem
- AAC encoding
- Metadata support
What is AMR?
AMR is an audio format optimized for speech encoding. It's commonly used for voice recordings on mobile phones and VoIP applications.
Format Details
- Full Name
- Adaptive Multi-Rate Audio
- Extension
- .amr
Key Features
- Speech optimized
- Mobile phones
- Small files
- Voice recording
M4A vs AMR
| Feature | M4A | AMR |
|---|---|---|
| Full Name | MPEG-4 Audio | Adaptive Multi-Rate Audio |
| Extension | .m4a | .amr |
| Best For | Better than MP3 | Speech optimized |