MP3 Converter

Best MP3 Converter to convert any file to MP3 format online for free.

Choose Files
  • From Device
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Max file size 1GB. Upgrade to Pro Sign Up for more

Audio Options
Choose a codec to encode or compress the audio stream. To use the most common codec, select "Auto" (recommended). To convert without re-encoding audio, choose "Copy" (not recommended).
100% represents the original volume. To double the volume, increase it to 200%. To reduce volume by half, select 50%
Enable if you want to reverse audio stream
Trim Settings
Specify the start position of trim (HH:MM:SS). Leave at 00:00:00 to disable.
Specify the end position of trim (HH:MM:SS). Leave at 00:00:00 to disable.

Best MP3 Converter tool to convert any file to mp3 format online.

How to Convert to MP3?

  1. Click the “Choose Files” button and select the files you want to convert to mp3.
  2. Convert to MP3 by clicking on the “Convert” button.
  3. When the status change to “Done” click the “Download” button.

Our MP3 Converter can convert any audio or video file to MP3 format. We support wav, flac, wma, m4a, alac, ogg, aac, amr, aiff, mp4, m4v, mkv, avi, wmv, f4v, f4p, mov, and more. Plus, you can also convert online audio & video files to MP3 format. Simply use the URL upload method and enter any audio or video file URL.

Best MP3 Converter

Use our Advanced Settings to perfectly convert any file to MP3 format. You can adjust the following settings:

  • Audio Codec - Select the MP3 (MPEG-1 Audio Layer III) codec for the best MP3 quality. Doing so will also unlock most of the following advanced options.
  • Audio Rate Control - You can either use VBR (Variable Bit Rate) or CBR (Constant Bit Rate). Choose VBR when you want to optimize file size and quality (the encoder will use a higher bitrate for complex content while saving bitrate from areas that do not need as much data. However, VBR may also introduce playback/seek issues due to the variability in bitrate. Use CBR when you want a constant bitrate throughout.
  • Audio Bitrate - Weather you use CBR or VBR, choose the highest bitrate you can afford (at the expense of a bigger file size) for the best audio quality.
  • Audio Sample Rate - Sample rate defines how many times per second a sound is sampled. For high-quality audio, we recommend either 44100 Hz (CD Quality) or 48000 Hz (DVD Quality)
  • Trim Settings - Use these options to trim your output audio file
  • Fade In/Out - Use the fading-in/out effect for a more pleasant listening experience.

Free & Secure

This MP3 converter is free. It works on Windows, Mac, Linux, Chrome, Edge, Firefox... pretty much any web browser. Plus, we upload files over a secure HTTPS connection and delete all files automatically after a few hours. So you can convert files without worrying about file security and privacy.

MPEG-1 Audio Layer III or MPEG-2 Audio Layer III (MP3) is a digital, audio-coding format used to compress a sound sequence into a very small file to enable digital storage and transmission. MP3 files are the most widely-used audio file for consumers. Due to small size and acceptable quality, MP3 files are accessible to a wide audience, as well as easy to store and share.


How to open an MP3 file?

Because MP3 files are so prevalent, most major audio playback programs support them. Simply clicking on the file will open it in iTunes or Windows Media Player, depending on your preferred platform. Users can also preview MP3 files.


Another program that can open MP3 files is VLC media player. Keep in mind that two other file types use the MP3 extension. They are Masterpoint green points data, which is obsolete; and TeslaCrypt 3.0 ransomware encrypted file, which is malware that demanded ransom in bitcoins, but is thankfully now deactivated and no longer a threat.


Developed by: ISO/IEC, Moving Pictures Experts Group

Initial Release: 1993

Useful links: can convert your files to these related formats:

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