online mp3 converter

How to Convert MP3
Online Free

Step 1. Add video/audio files by dragging and dropping or clicking the + icon.

Step 2. Choose MP3 as the output format from the Convert all files to > Video/Audio tab.

Step 3. Hit the CONVERT button to start MP3 conversion process.

Step 4. Click the DOWNLOAD or Save to Dropbox button to get the converted MP3 files.

Why Choose
Online UniConverter
to Convert MP3

no watermarks no ads
No Watermark or Ads
You can convert MP3 audio files to any formats and vice versa without ads or watermarks.
multiple formats supported
Widely Supported Formats
Online UniConverter supports convert MP3 to multiple formats including MP4, WAV, M4A, OGG, FLAC, etc.
online mp4 converter
Browser Supported
You can run Online UniConverter with Google Chrome, Safari, Firefox, and your smartphones without system restriction.
No Quality Loss
Online UniConverter keeps the best quality of your converted MP3 files.
info safety
Privacy and Safety
We keeps your information secure all the time. All uploaded files will be deleted from the server after 24 hours.
easy online converter
Easy to Use
The MP3 conversion process can be finished within a few clicks, easy to use for anyone.

FAQ About Online MP3 Converter

  • MP3 is the most commonly used audio formats today, it was created by the Moving Pictures Experts Group (MPEG) and is abbreviated from MPEG-1 or MPEG-2 Audio Layer 3. Compared with the lossless WAV audio file, MP3 is in a much smaller size but also keeps high quality. As MP3 compatible with almost all devices and platforms, so you can open MP3 audio files with any player without trouble.
  • You can convert MP4 or other video formats to MP3 audio files easily and quickly with Online UniConverter. Just go to the MP4 to MP3 converter page and click on the + icon to import MP4 videos. Then, choose MP3 from the Convert all files to drop-down list, generally, MP3 will be the default output format here. Finally, click on the CONVERT button and downoad the converted files after a while.
  • You can save online videos to MP3 format with Wondershare UniConverter for desktop. Just open the software on your Windows/Mac after installation, and go to the Download section. Then choose the output format as MP3 and paste the URL. The video will be saved as MP3 after a few minutes.
  • Online UniConverter supports most common video and audio formats that you can convert MP3 to or convert from MP3. The common video formats including MP4, MOV, FLV, and MKV. And audio formats including WAV, M4A, OGG, WMA, etc.