AMR to M4R Converter
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What is a AMR file?
AMR stands for Adaptive Multi-Rate audio codec. Originally developed for speech compression in mobile devices, AMR is optimized for human voice and is widely used in GSM and VoLTE calls. It balances audio quality and file size, even in low-bandwidth environments.
While AMR isn’t suitable for high-fidelity music, it plays a key role in mobile communications. Many older phones and voice recorders save audio in this format, making it useful for call recordings and voicemail storage.
How to open AMR files
AMR files can be opened with VLC, Audacity (with FFmpeg), and various mobile apps. They're especially common in call recording apps and VoIP systems.
To convert AMR to more compatible formats like MP3 or WAV, AnyConv provides a simple online solution.
Key facts about AMR
- Full name: Adaptive Multi-Rate Audio Codec
- Extension: .amr
- MIME type: audio/amr
- Developed by: Ericsson
- Initial release: 1998
Useful links and resources
What is a M4R file?
M4R is another extension of the M4A format, used specifically for iPhone ringtones. It contains AAC-encoded audio and is designed to be easily imported into iOS devices via iTunes. In most cases, M4R files are short clips extracted from longer M4A or MP3 songs.
Despite being almost identical to M4A in structure, the M4R extension helps iTunes and iPhones recognize the file as a ringtone rather than music or podcast content.
How to open M4R files
M4R files are used for iPhone ringtones and can be played or transferred using iTunes. On most systems, VLC and QuickTime can also open them directly.
To create a ringtone or convert M4R to another format, AnyConv is a convenient online tool.
Key facts about M4R
- Full name: MPEG-4 Ringtone File
- Extension: .m4r
- MIME type: audio/aac
- Developed by: Apple Inc.
- Initial release: 2007
Useful links and resources
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❓ Frequently Asked Questions
- Do I need to register to convert AMR files?Not at all! You can convert AMR to M4R without signing up or installing anything.
- Is it safe to convert AMR to M4R on AnyConv?Absolutely. All AMR and M4R files are securely handled and automatically deleted after 1 hour. Nobody can access your data.
- Will the quality change after converting AMR to M4R?We do our best to preserve the original quality during AMR to M4R conversion. The result is accurate and clean.
- How long does it take to convert AMR to M4R?Most conversions from AMR to M4R take just a few seconds — even for larger files.
- Can I upload more than one AMR file?Yes, batch conversion is supported. You can convert multiple AMR files to M4R at once — fast and easy.
- What browsers support AMR to M4R conversion?All modern browsers! Chrome, Firefox, Safari, Edge — AnyConv runs online and supports converting AMR to M4R on any platform.