Audio Joiner & MP3 Merger
Merge several songs or recordings into one audio file in seconds. Put them in order, add a smooth crossfade and download as MP3 or WAV. Free, private and right in your browser.
- 100% free
- No upload
- Crossfade
Drop your audio files here
or
MP3, WAV, M4A, OGG, FLAC, AAC and video files. Add two or more.
Your files are processed on your device and are never uploaded.
How to join audio files
- 1
Add your files
Drop two or more MP3, WAV, M4A or other audio files, or choose them from your device.
- 2
Set the order
Use the arrows to move tracks up or down. Press play to check each one.
- 3
Choose transitions
Add a crossfade for smooth mixes, or a short silence between tracks.
- 4
Join and save
Pick MP3 or WAV, press Join audio and download your new file.
Why use this audio joiner
Merge many files
Join up to 50 songs, voice notes or clips into a single track.
Crossfade or gap
Blend tracks smoothly or put a few seconds of silence between them.
Match volume
Bring every track to the same level so nothing is too quiet or too loud.
MP3 or WAV
Save as MP3 from 128 to 320 kbps, or as lossless WAV.
Private and secure
Your audio is processed in your browser and never uploaded.
Mix any formats
Combine MP3, WAV, M4A, OGG and FLAC files with different quality settings.
Free online MP3 joiner for playlists, podcasts and mixes
The AIOCreate Audio Joiner is a free online tool to merge audio files into one. Combine songs into a non-stop mix, join the parts of a podcast or lecture, put voice notes together or build a single audio track for a video.
You can mix files of different formats and sample rates. The joiner converts them to the same quality automatically, adds smooth crossfades if you want, and everything happens inside your browser, so your audio stays private.
Audio joiner FAQ
How do I merge MP3 files online?
Add your MP3 files to the joiner, put them in the right order with the arrows, then press Join audio and download the merged MP3.
Is this audio joiner free?
Yes. It is completely free, with no sign-up, no watermark and no limit on how many times you use it.
Are my files uploaded to a server?
No. All audio is processed on your own device inside the browser, so your files are never uploaded.
Can I join different audio formats?
Yes. You can combine MP3, WAV, M4A, AAC, OGG, FLAC and the sound of most videos in one file.
What does crossfade do?
A crossfade slowly lowers the end of one track while the next one starts, so the songs blend without a gap.
How many files can I join?
You can join up to 50 files at once. Very long results need more memory, so desktop browsers handle the biggest jobs best.
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