Free online MP3 to AMR converter

Converting .mp3 audio to .amr format.

Convert MP3 to AMR online - free

.mp3 .amr

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How to convert mp3 to amr file

July 7, 2026
Audio
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Converting MP3 Audio Files directly to Adaptive Multi-rate Codec Files (.mp3 to .amr conversion) is certainly possible and quite straightforward.

Many modern multimedia editing programs and conversion tools, such as MediaCoder or FormatFactory, allow users to easily convert MP3 to AMR.

Alternatively, you can will find numerous online conversion solutions.

101convert.com assistant bot
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Understanding MP3 and AMR file formats

MP3 (MPEG Audio Layer III) is a popular audio format known for its ability to compress audio files without significantly affecting sound quality. It is widely used for music and audio streaming due to its small file size and compatibility with most media players and devices.

AMR (Adaptive Multi-Rate) is an audio format primarily used for speech coding. It is optimized for voice recordings and is commonly used in mobile devices for voice memos and call recordings. AMR files are efficient in terms of storage and bandwidth, making them ideal for mobile communications.

How to convert MP3 to AMR

Converting MP3 files to AMR format can be useful when you need to optimize audio files for mobile devices or voice applications. Here are the steps to perform the conversion:

Best software for MP3 to AMR conversion

One of the best software options for converting MP3 to AMR is Audacity. It is a free, open-source audio editing tool that supports a wide range of audio formats.

To convert using Audacity, follow these steps:

Open Audacity and import your MP3 file by clicking File → Import → Audio.
Edit the audio if necessary.
To export the file, go to File → Export → Export Audio.
In the export window, choose AMR as the file format.
Click Save to complete the conversion.

Online converters for MP3 to AMR

If you prefer not to download software, online converters like Zamzar or OnlineConvert can also perform MP3 to AMR conversions. Simply upload your MP3 file, select AMR as the output format, and download the converted file.

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MP3 vs AMR: format comparison

How the MP3 and AMR formats compare on the properties that matter most for this conversion.

Comparison of the MP3 and AMR file formats
Property	.MP3 MPEG-1 Audio Layer III	.AMR Adaptive Multi-Rate Audio Codec
Compression	Lossy	Lossy
Audio quality	High	Low
Audio channels	Up to stereo	Mono
Metadata support	Extensive	Basic
Streaming	Partial	Yes
DRM protection	Optional	—
Opens in a web browser	Yes, natively	No
Typical file size	Small	Very small
Open standard	Partly open	Partly open
Best used for	Music	Speech and voice
Introduced	1993	1999
Developer	Moving Picture Experts Group (MPEG)	3GPP
MIME type	audio/mpeg	audio/amr

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Frequently asked questions

Is the MP3 to AMR converter free?

Yes, converting MP3 to AMR on 101convert.com is completely free. No registration, email address or installation is required.

How large can my MP3 file be?

You can upload MP3 files up to 1000 MB and convert up to 100 files at once in a single batch.

What happens to my uploaded files?

Files are processed automatically and deleted from our servers within a few minutes after conversion. We never view or share your files.

Do I need to install any software to convert MP3 to AMR?

No. The MP3 to AMR conversion runs entirely online in your browser and works on Windows, Mac, Linux, Android and iPhone.

Did the conversion fail?

In most cases, the cause is an incorrect file format. Please upload a valid MP3 file for this MP3 to AMR conversion. Occasionally, the issue may be on our side. We analyze recurring conversion failures and disable or fix the converter if we detect a defect.

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Reverse conversion

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Free online MP3 to AMR converter

Convert MP3 to AMR online - free