Audio Joiner
Last updated: June 1, 2026In-browserMerge multiple audio files into one.
Audio Joiner is a free online tool to merge multiple audio files into one. It runs entirely in your browser, so your files never leave your device — nothing is uploaded. There's no sign-up, no watermark, and it works on any modern browser on desktop or mobile.
How to use Audio Joiner
The Audio Joiner merges several MP3, WAV or M4A files into a single track, in the order you add them, and exports one MP3. It's the simple way to stitch together clips, chapters or songs. It runs privately in your browser with no upload and no watermark.
Read the full guide: How to Merge Audio Files into One (Free)
- 1Add the audio files you want to join, in order.
- 2Reorder them if needed.
- 3Merge and download the combined MP3.
Combine in any order
Add and arrange clips so they play back exactly how you want.
One clean MP3
Export a single, seamless audio file ready to share or upload.
Private and free
Merging runs on your device — no upload and no watermark.
Combine audiobook chapters into one file
Downloaded an audiobook as separate chapter files and want a single track for your car stereo or phone? Add the MP3 or M4A chapters in reading order, remove any stray intro clips, then export one continuous MP3. Because the files concatenate in the exact order you list them, the chapters play back start-to-finish without you reshuffling tracks on every drive.
Merge podcast segments before publishing
Recorded your intro, main interview, and ad read as separate clips? Stack them in sequence and join them into a single 192 kbps MP3 ready to upload to your podcast host. Everything is stitched locally in your browser, so unreleased episodes never touch a server. Note it concatenates directly, so trim silence or add fades in an editor beforehand if you need seamless transitions.
Join voice memos into one recording
Captured a lecture, meeting, or interview across several voice-memo files when your phone split the recording? Add them in chronological order and merge them into one MP3 you can archive, transcribe, or share as a single attachment. It accepts M4A, WAV, and MP3, so iPhone and Android memos combine together without converting each clip by hand first.
Audio Joiner — frequently asked questions
How do I merge audio files?
Add your clips in order, rearrange if needed, then merge and download the combined MP3.
What formats can I join?
MP3, WAV and M4A files; the output is a single MP3.
Is there a limit on how many files?
There's no fixed limit, but very large combined files depend on your device's memory.
Is it free with no watermark?
Yes, completely free and watermark-free.
Are my files uploaded?
No, the merge happens entirely in your browser.
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