convertix
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Install Convertix

Use it like an app, no store and no account. Your files still never leave your device.

iPhone and iPad

  1. Open this page in Safari.
  2. Tap Share, the square with an arrow pointing up.
  3. Choose “Add to Home Screen”.

Android

  1. Tap your browser's ⋮ menu.
  2. Choose “Install app” or “Add to Home screen”.

Computer

  1. In Chrome or Edge, click the install icon in the address bar.
  2. In Safari on Mac, choose File and then “Add to Dock”.
Home / Convert audio to MP3

Convert Audio to MP3 Online

Convert your audio files to MP3 and choose the quality. They're processed in your browser: nothing is uploaded to any server.

No sign-up and nothing uploaded to a server: everything happens in your browser. See for yourself.

How to use: Convert audio to MP3

  1. Choose the MP3 quality (192 kbps is a good option) and whether you want it in mono.
  2. Select or drag in one or more audio files.
  3. Listen to the result on the page and download it, or get them all together in a ZIP.

Frequently asked questions

Which quality should I choose?

128 kbps for voice, 192 kbps for general use, and 256–320 kbps if you want the best possible quality in MP3.

Why won't my audio file open?

Your browser couldn't read that format. Try Chrome or Edge, or use another copy of the same audio in WAV or MP3.

Are my audio files uploaded to the internet?

No. The conversion happens on your device.

About this tool

The formats you can open depend on your browser. In general, Chrome, Edge and Firefox read WAV, MP3, OGG, OPUS and FLAC without problems. M4A/AAC support depends on your system.

For voice (notes, calls, interviews), 128 kbps is more than enough. For music, 192 kbps or higher is better. Converting an already compressed file (like OGG or M4A) to MP3 doesn't improve its quality; it only changes the format.

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