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Convert AMR to AAC

Free, no account, no watermark. Converted on our servers, then deleted.

Drop an AMR file here

As many as you like. We will show you what they convert to.

How to convert AMR to AAC

  1. 1

    Choose your file

    Drop an AMR file onto the converter, or pick one from your device. You can add several at once.

  2. 2

    Select AAC

    Pick AAC as the output format. Open Settings if you want to control the audio codec, the audio bitrate, and the sample rate, and 2 more.

  3. 3

    Download the result

    Convert and download the finished file. No account, and nothing to install.

amr

Adaptive Multi-Rate

The narrowband speech codec of mobile phones and voice recorders: 8 kHz, mono, tiny files that sound like a phone call.

aac

Advanced Audio Coding

The MP3 successor: better quality at the same bitrate, and the default audio inside MP4.

AMR to AAC, asked and answered

Does converting AMR to AAC lose quality?

Yes. AMR has already discarded some detail and AAC discards more, because re-encoding starts from what survived the first pass rather than from the original. If you need every detail kept, convert to WAV instead.

Can I convert the AAC back to AMR?

Not here. We can read AAC but no engine of ours writes AMR, so this conversion only goes one way.

What can I change about the AAC it produces?

You can set the audio codec, the audio bitrate, the sample rate, mono or stereo, and where it starts and stops. Anything left on Auto is decided by the encoder, which is usually the right answer unless you are targeting a specific size or device.

Where does the conversion happen?

On our server. The file is sent over HTTPS and converted in a sandbox with no network access of its own; your input and the result go together, removed at once if it fails and otherwise kept for a few minutes so you can download them, then deleted — whether or not you did. There are no accounts for anything to be kept against.

Is there a limit on file size?

Yes — there is a per-file cap and an hourly job limit, because this runs on one small server. The API page states the limits currently in force rather than a number baked into this page.

Other formats from AMR

Other ways to reach AAC