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Free tools › Audio and video

AMR to MP3

The recorder format of older Android and Nokia phones, turned into an MP3 anything plays.

This one runs on your credits. The recorder format of older Android and Nokia phones, turned into an MP3 anything plays.

Sign in and get 500 free credits every month — enough for many files — then drop the file in the workbench and run amr to mp3 there.

Pick a file below to see exactly what it would cost.

Sign in and run it — free credits included

More free conversions, where you upload. The Fylane extension does the same work inside any upload form, on its own free share every day.Add to Chrome

How to convert AMR to MP3

  1. Drop the .amr file.
  2. Pick a quality — 128 kbps is plenty for voice.
  3. Press Convert and download the MP3.

What happens to your file

AMR is a speech codec: narrowband (8 kHz) on older phones, wideband (16 kHz) on newer ones. Both are decoded natively on Fylane’s servers and encoded as MP3 at the bitrate you pick. The voice sounds as it did on the phone — AMR was never high fidelity, and the MP3 cannot add what the phone did not record.

Questions

Where do AMR files come from?

Voice recorder and call recorder apps on older Android phones, Nokia and BlackBerry handsets, and some MMS voice messages. WhatsApp voice notes are Opus, not AMR.

Do it once, not on every form

Fixing a file here means downloading it and going back to the form. The Fylane extension does this work inside the form instead, on the file you already have.

And it keeps the result. The next application that asks for a résumé, a cover letter and a photo fills all three from one tap, each one refitted to what that site accepts.

Your files stay in the browser, encrypted, on your machine. Nothing is uploaded to keep them and nothing is sent anywhere to fill a form.

Filmed from the extension: three upload fields on a job application, filled from one tap.

Add to Chrome — freeWhat it does

Do this in code

curl -X POST https://api.fylane.dev/v1/jobs \
  -H "Authorization: Bearer $FYLANE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "file_id": "<file id>",
    "operation": "audio.convert",
    "options": {
      "format": "mp3",
      "bitrate": 192
    }
  }'

The same operation, audio.convert — mp3, wav, aac, flac, ogg, opus or aiff out of whatever came in. Upload first with the quickstart; every option is on the operations page. 500 free credits a month, then $5 per thousand.