🔗Merge Audio
Join MP3s into one track. Free, private, no signup — files never leave your browser.
Many tracks. One file.
Join up to 10 tracks gaplessly — resampled cleanly, never uploaded.
10
tracks max
in your order
48k
output
clean resampled WAV
0
uploads
100% in-browser
Free
forever
no signup
How to use Merge Audio
Stitch tracks together in order. Drop 2 to 10 audio files, arrange them, and download one joined WAV — gapless, full quality, done locally. Your files never leave your browser.
- 1Drop 2–10 audio files (MP3, WAV, M4A).
- 2Check the numbered order.
- 3Hit Merge and download the joined WAV.
Use cases
Audiobook chapters
Join parts into one continuous listen.
DJ mixes & sets
Stitch a recorded set into a single file.
Split voice notes
Rejoin memos that got split across messages.
What merge audio does
- ✓Join 2–10 tracks in your chosen order.
- ✓Mixed formats resampled to one clean 48kHz WAV.
- ✓Gapless joins with a numbered, removable list.
- ✓Preview the merged result before downloading.
- ✓Private: no uploads, no accounts, no watermarks.
Specs
- Speed
- Seconds, on your device
- Input
- 2–10 tracks: MP3, WAV, M4A
- Output
- Joined 48kHz WAV
- Privacy
- Browser DSP, zero uploads
- Cost
- Free, unlimited, no signup
Frequently asked questions
Is my audio uploaded anywhere?
No. Merging runs 100% in your browser with the Web Audio API. Nothing ever leaves your device.
Do tracks need the same format?
No — MP3, WAV and M4A mix freely; everything is resampled to one clean 48kHz WAV.
How many tracks can I join?
Up to 10 per merge, in your exact order.
Are there gaps between tracks?
No — tracks join gaplessly back to back.