Merge Audio
Join several audio files into one.
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About Merge Audio
Merge Audio joins several audio files into one MP3 — right in your browser. Add your files, drag them into the order you want, and download a single combined track.
It runs an in-browser build of ffmpeg, so your files are processed on your own device and never uploaded. It's free, with no sign-up and no watermark.
Frequently asked questions
- Is it free to use?
- Yes — it's completely free with no sign-up, no watermark, and no limits.
- Is my file uploaded to a server?
- No. It runs an in-browser build of ffmpeg, so your file is processed entirely on your own device and never uploaded.
- Why does the first run take a moment?
- The first time, it downloads a ~32 MB processing engine. That's cached afterwards, so later runs start instantly.
- In what order are the files joined?
- Exactly the order shown in the list — use the up and down arrows to rearrange them before merging.
- Can I combine different formats?
- Yes. Files in different formats (MP3, WAV, M4A and more) are re-encoded and joined into a single MP3.