AMR to M4R Converter

Batch convert amr files to m4r format online for free

Choose files or drag & drop them here.
Only you have access to your files.
All files will be deleted after one hour.

How to convert AMR files to M4R online?

Step-by-step guide to convert amr to m4r using AnyConv. It works on PC (Windows, Mac, Linux) and mobile devices (iPhone, Android).

Drag and drop your AMR file into the upload area. The maximum file size is 100 MB.

Click "Convert" to change amr to m4r. The conversion usually takes a few seconds.

Now you can download the M4R file. The download link only works on your device.

❓ How can I convert files from AMR to M4R?

First you need to add file for conversion: drag and drop your AMR file or click the "Choose File" button. Then click the "Convert" button. When AMR to M4R conversion is completed, you can download your M4R file.
⏱️ How long does it take to convert AMR to M4R?

Audio conversion is pretty fast. You can change AMR to M4R in a few seconds.
🛡️ Is it safe to convert AMR to M4R on AnyConv?

Of course! We delete uploaded files immediately, and converted ones after 1 hour. No one has access to your files. File conversion (including AMR to M4R) is absolutely safe.
💻 Can I convert AMR to M4R on Mac OS or Linux?

Yes, you can use AnyConv on any operating system that has a web browser. Our AMR to M4R converter works online and does not require software installation.

🔸 File format	AMR	M4R
🔸 Full name	AMR - Adaptive Multi-Rate	M4R - MPEG 4 Ringtones Audio
🔸 File extension	.amr, .3ga	.m4r
🔸 MIME type	audio/amr	audio/aac
🔸 Developed by	3GPP	Apple Inc.
🔸 Type of format	Audio compression format
🔸 Description	The Adaptive Multi-Rate (AMR or AMR-NB or GSM-AMR) audio codec is an audio compression format optimized for speech coding. AMR was adopted as the standard speech codec by 3GPP in October 1999 and is now widely used in GSM and UMTS.	M4R - is a digital multimedia container format used to store audio in mono channel mode. For example, the Apple iPhone uses MPEG-4 audio files (with .m4r extension) for its ringtones. The length of the m4r ringtone should not exceed 40 seconds. M4R and M4A formats shares many similar features.
🔸 Technical details	AMR speech codec consists of a multi-rate narrowband speech codec that encodes narrowband (200-3400 Hz) signals at variable bit rates ranging from 4.75 to 12.2 kbit/s with toll quality speech starting at 7.4 kbit/s. Sampling frequency 8 kHz/13-bit (160 samples for 20 ms frames), filtered to 200-3400 Hz.
🔸 File conversion	AMR conversion	M4R conversion
🔸 Associated programs	Audacity, FFmpeg, MPlayer, QuickTime, VLC media player	Apple QuickTime Player, Apple iTunes
🔸 Wiki	https://en.wikipedia.org/wiki/Adaptive_Multi-Rate_audio_codec	http://en.wikipedia.org/wiki/MPEG-4_Part_14

AMR to M4R Conversion Quality Rating

4.7 (545 votes)

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