AMRNB to M4R Converter

Convert AMRNB to M4R online quickly and easily. Just upload your file, convert it, and download the M4R in seconds.

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What is AMRNB ?

AMR-NB (Adaptive Multi-Rate Narrowband) is an audio compression format used primarily for voice data. It enables efficient transmission of speech over mobile networks, optimizing bandwidth while maintaining sound quality.

AMRNB format  ▶

What is M4R ?

The M4R file format is a variant of the M4A audio format specifically used for ringtones on Apple devices. It contains audio data compressed using the AAC (Advanced Audio Codec) and is typically created from music tracks or sound recordings.

M4R format  ▶

How to convert AMRNB to M4R

  1. Upload your AMRNB file
    Drag and drop your AMRNB file, click 'Select Files' to upload from your device, or import directly from Dropbox, Google Drive, OneDrive, or paste a URL.
  2. Choose M4R as output format
    The converter is preset to M4R, but you can select any other output format before converting.
  3. Adjust settings (optional)
    If you like, tweak output options such as resolution, quality, or compression before converting.
  4. Convert the file
    Click the 'Convert' button. The conversion takes only a few seconds.
  5. Download your converted file
    Download the converted file to your device, or save it directly to Google Drive, Dropbox, or OneDrive.