MP3 Converter

Convert MP3 files online, for free, with nothing to install.

MP3 is the most widely played audio format: music compressed to about a tenth of its size, which every phone, player and car stereo plays. Converting makes a new file: the sound is decoded and written again, so converting from a lossy format never brings back what was lost. MP3 files can be saved as AAC, AIFF, FLAC, M4A, WAV, WMA, on our server.

What is an MP3 file?

MP3 – MP3 audio. MP3 is the most widely played audio format: music compressed to about a tenth of its size, which every phone, player and car stereo plays. Converting makes a new file: the sound is decoded and written again, so converting from a lossy format never brings back what was lost.

How to convert an MP3 file

  1. Click Select File, or drop your .mp3 files anywhere on this page.
  2. Pick the format you want next to each file, for example AAC.
  3. Click Convert, then Download when it's done.

MP3 at a glance

MP3
LayoutA stream of sound
EditableIn audio editors
Created byFraunhofer, 1993
Best forMusic on any device

Frequently asked questions

What is an MP3 file?

MP3 is the most widely played audio format: music compressed to about a tenth of its size, which every phone, player and car stereo plays. Converting makes a new file: the sound is decoded and written again, so converting from a lossy format never brings back what was lost.

How do I open an MP3 file?

Most media players open MP3 files: VLC plays almost every audio format, and the player on your phone or computer handles the common ones. To read it anywhere, convert it to MP3 here.

Is converting MP3 files free?

Yes. Everyone gets 25 free credits a day, with no account needed. Conversions on our server use one credit per started minute of work, so most cost a single credit. Credits reset at midnight UTC.

Are my MP3 files uploaded anywhere?

This conversion runs on our server, because converting audio needs ffmpeg, which does not run in a browser. Your file is sent over an encrypted connection, and both it and the result are deleted 72 hours after the conversion. The server has no internet access while it works on your file.

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