.AMR File Extension

Adaptive Multi-rate Codec File

Developer Ericsson
3.4  |  727 Votes
Category Audio Files
Format Binary

What is an AMR file?

An AMR file is an audio file saved in a compressed audio format developed by Ericsson. It is optimized for storing spoken audio and is used by many 3G cell phones to store voice recordings, which include MMS messages.

More Information
Screenshot of a .amr file in VideoLAN VLC media player 3
AMR file open in VideoLAN VLC media player 3

AMR files incorporate the Algebraic Code Excited Linear Prediction (ACELP) algorithm, which is designed to efficiently compress human speech audio.

AMR files may be saved in either the AMR-NB (Narrowband) or AMR-WB (Wideband) format. Wideband audio supports a broader frequency range and therefore provides better sound quality.

How to open an AMR file

You can open and play an AMR file in VideoLAN VLC media player (multiplatform), Microsoft Groove Music (Windows), or Apple QuickTime Player (Mac). You can edit the audio an AMR file contains in Audacity (multiplatform), provided you have Audacity's optional FFmpeg library installed.

How to convert an AMR file

VideoLAN VLC media player, FFmpeg, and Audacity (with the optional FFmpeg library installed) can convert AMR files to other audio formats. For example, VLC can convert AMR files to:

  • .MP3 - MP3 Audio
  • .OGG - Ogg Vorbis Audio
  • .FLAC - Free Lossless Audio Codec
Open and view .AMR files with File Viewer Plus.Free Download

Programs that open AMR files

Updated April 18, 2022

Verified by FileInfo.com

The FileInfo.com team has independently researched the Adaptive Multi-rate Codec file format and Mac, Windows, Linux, Android, and iOS apps listed on this page. Our goal is 100% accuracy and we only publish information about file types that we have verified.

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