- 100% free, no signup
- No upload — files never leave your device
- No watermark on free exports
- Built by an award-winning NZ creator
How to join audio files online
Add, reorder, export — all in your browser, nothing uploaded.
- 1
Add your audio files
Drag in or browse for the clips you want to join — MP3, WAV, M4A, OGG and more. Add as many as you like; they stay on your device.
- 2
Set the order
Use the up and down arrows to arrange the files. They join top to bottom, exactly in the order shown, with no gaps between them.
- 3
Remove anything you don’t need
Hit the bin icon to drop a file, or “Add more” to drop in extra clips before you export.
- 4
Pick MP3 or WAV
Choose MP3 for a small, share-anywhere file, or WAV for uncompressed full quality. Files are joined end-to-end at the first file’s sample rate.
- 5
Join and download
Press Join — your single combined track is built in the browser and the download starts automatically as joined.mp3 or joined.wav.
Audio Joiner — FAQ
Is this audio joiner really free?
Yes — join as many tracks as you like, free, with no signup and no watermark on the result. An optional Pro membership (NZ$9/mo) adds batch jobs and saved history, but the joiner itself is fully usable on its own.
Are my audio files uploaded anywhere?
No. Every file is decoded and joined directly in your browser with the Web Audio API — nothing is uploaded, there is no server, and nothing is stored online. Your recordings never leave your device.
What audio formats can I join, and what can I export?
You can add any format your browser can decode — MP3, WAV, M4A/AAC, OGG, FLAC and more — and mix formats in one job. You export the finished track as a single MP3 or WAV.
Can I use this to stitch together voice notes or podcast segments?
Absolutely — it’s great for joining client voice notes, open-home walkthrough recordings, course audio or podcast intros, body and outro segments into one continuous file for a Kiwi audience.
Does it work on my phone?
Yes — it runs in any modern mobile or desktop browser, so you can join clips straight from your phone with no app to install.
How are the files combined?
They’re placed end-to-end in the order you set, with no silence or crossfade added, at the sample rate of the first file. The result is one continuous track.
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