How to use the AMR to MP3 converter
- Choose your AMR file or drop it on the box.
- Pick an audio quality. 192 kbps is the usual choice; 320 kbps for music you care about.
- Click "Convert to MP3". A progress meter shows how far along it is.
- Download your MP3 and listen to it right on the page.
Why convert AMR to MP3?
AMR voice recordings from older phones do not play on computers or iPhones. MP3 does.
- AMR: telephone-quality sound only.
- MP3: plays on every device.
- MP3: small files.
AMR is telephone quality, so 64–96 kbps MP3 already captures everything in the recording.
AMR vs MP3
| AMR | MP3 | |
|---|---|---|
| Full name | Adaptive Multi-Rate | MPEG-1 Audio Layer III |
| Type | Audio | Audio |
| Created by | 3GPP and Ericsson (1999) | the Fraunhofer Institute and MPEG (1993) |
| Compression | Lossy | Lossy |
| Codec | AMR-NB or AMR-WB | MP3 |
| Best for | Phone voice recordings and call recordings | Music, podcasts, audiobooks and ringtones |
| Plays on | Some Android phones and VLC; most computers and iPhones cannot play AMR | Every phone, computer, car stereo, smart speaker and browser |
Does converting AMR to MP3 lose quality?
Both formats are lossy, so converting adds a small amount of loss. Use the same or a higher bitrate than your AMR (192 kbps covers most files) and the change is inaudible.
How long does it take?
A few seconds for a song, and under a minute for an hour-long recording on most computers.
What is an AMR file?
AMR is a speech codec designed for mobile phone calls. Older phones saved voice recordings and call recordings as .amr files at very low bitrates.
What is an MP3 file?
MP3 is the most widely used audio format in the world. It removes sounds people are unlikely to hear, shrinking a song to about a tenth of its CD size. At 192 kbps or higher most listeners cannot tell it from the original, and every device plays it. Its patents expired in 2017, so it is now free to use.
Frequently asked questions
How much does the AMR to MP3 converter cost?
Nothing. It is free with no registration, no watermark and no limit on how many files you convert.
Is my file uploaded to a server?
No. The converter runs inside your browser using WebAssembly, so your file is processed on your own device and never sent to us or anyone else.
Will the MP3 sound as good as the AMR?
Both formats are lossy, so converting adds a small amount of loss. Use the same or a higher bitrate than your AMR (192 kbps covers most files) and the change is inaudible.
An AMR voice recording will not play on a PC. What should I do?
Convert AMR to MP3.
Can I use it on my phone?
Yes. Open the page in your phone's browser and choose a file. Phones have less memory than computers, so very large files are better converted on a laptop or desktop.