How to merge MP3 files online

This tool lets you merge audio files online in a few seconds and is completely free. It only takes a couple of clicks.

Want to merge MP3 or other files into one? Combine audio that you've taken from videos? This web app makes it easy. We'll run through an example to learn how to combine songs into one track. Then you can use that example to turn all sorts of audio into a single track.


  1. Upload your audio files

    You don't need an account to use Online Audio Joiner by Clideo, but as we'll see in a bit, it's a good idea to sign in or create an account if you don't already have one.

    Now we can start mixing our two or more songs together. Click "Choose Files" and find the necessary file on your phone, Mac or Windows computer. You can also upload from Google Drive, Dropbox, or add a web link.

    Add an MP3 or other audio files to combine

    Then you can click "Add More Files" to pick more audio tracks. You can use any file type you want, even different formats for joining. Then drag and drop them until you like the order.

    Change the order and merge your songs online

  2. Choose your output settings

    After you've uploaded the songs you want to combine, you're ready to tell the Online Audio Joiner what it should create.

    First, we'll choose the format to save from the dropdown:

    Convert your combined track if necessary

    Since we're looking at how to mix songs together, we'll use MP3 as an output. But you have lots of other options — you can export as M4A, AIFF, W64, and more.

    We'll also turn crossfade on to create a seamless mix that isn't jarring when the song changes.

    Add a crossfade effect to your joined audio file

    Crossfade blends the two tracks together when one starts and the other ends. If you want a more distinct transition, leave it off. It's a good option for songs, but most other types of audio might sound a bit weird with the effect.


  3. Download the joined audio

  4. When you're ready to save the file, just hit "Merge." The Online Audio Joiner will take a moment to create process. When it's done, click "Download" to save it to your computer.

    Download your merged audio to the device

    You can also create a Clideo account to save the new tracks there. Saved files are available for 24 hours, so you can download them to any device. Sign in with Facebook or Google to make it even faster.


Now you know how to merge audio files online. You can do it for free, without any complicated audio editing software, in just a few minutes. Once you've learned how to combine audio files, you can use the same method to merge videos with Clideo. The possibilities are endless! Play around with different file types and export options to learn what works best for you.