Convert AMR to AAC
Fast, free AMR to AAC conversion — works in any browser
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amr
AMR (Adaptive Multi Rate): adaptive encoding with variable bitrate
| File extension | .amr |
|---|---|
| File category | audio |
| Programs | VLC media player Windows Media Player QuickTime Player Audacity |
| Tech description | https://en.wikipedia.org/wiki/Adaptive_Multi-Rate_audio_codec |
| MIME type | audio/amr |
| Developer | 3GPP |
This information compression format allows for optimizing speech encoding. Files in the Adaptive Multi Rate format can be created using phones and smartphones. AMR files are mostly used for voice recordings. The main advantages of the format are the large number of encoding and decoding rates, as well as the small size of the resulting content. With the help of appropriate software, an Adaptive Multi Rate file can be converted into any other audio format.
aac
Advanced Audio Coding (AAC)
| File extension | .aac |
|---|---|
| File category | audio |
| Programs | Apple iTunes VLC media player Windows Media Player Winamp foobar2000 |
| Tech description | https://en.wikipedia.org/wiki/Advanced_Audio_Coding |
| MIME type | audio/aac |
| Developer | AT&T Bell Labs, Fraunhofer IIS, Dolby, Sony |
AAC (Advanced Audio Coding) is a lossy audio compression format standardized by the MPEG group in 1997, designed as the successor to MP3. At the same bitrate, AAC delivers noticeably better audio quality thanks to improved psychoacoustic modelling, support for up to 48 audio channels, and sampling frequencies from 8 to 96 kHz. AAC is the default audio format on Apple devices, iOS, iTunes, and YouTube. Files typically use the .aac or .m4a extension. Developed jointly by AT&T Bell Labs, Fraunhofer IIS, Dolby, and Sony, AAC is natively supported on Android, iOS, Windows, macOS, and most modern media players.
FAQ
How to convert AAC to AMR?
Upload your AAC file, select AMR as the output format, and click Convert. The converted file will be ready to download in seconds — no account or installation required.
How long does it take to convert AAC to AMR?
Most AAC files convert in seconds. Larger files may take up to a few minutes depending on size and internet speed. You can track the progress bar in real time during conversion.
Is it safe to convert AAC files online?
Yes. All uploaded AAC files and converted AMR results are automatically deleted from our servers within 1 hour after conversion. We do not store, share, or access your files.
Can I convert AAC on iPhone or Android?
Yes, our converter works on all devices and operating systems — iPhone, iPad, Android, Windows, and macOS. Open the site in your mobile browser, upload the AAC file and convert to AMR without installing any app.
