Combine Multiple Audio Files into One, Free
Join multiple audio files into one, in the order you set, with an optional gap.
Select audio files
MP3, WAV, M4A, FLAC, OGG — joined in your browser, in the order you set
Click to choose, or drop a file here
You can also paste (Ctrl+V / Cmd+V)
Most tools run entirely on your device
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About merging audio files
Joining several audio clips into one — combining voice memo segments, stitching together a podcast's parts, or building a single track from several recordings — is what this tool does, in the order you set, with an optional gap of silence between clips.
Each file is decoded into raw audio samples with the Web Audio API, concatenated in your chosen order (with silence inserted between clips if you set a gap), and the combined buffer is re-encoded for download — entirely in your browser.
Supported files
Accepts multiple MP3, WAV, M4A and other common audio files. Produces a single merged file as MP3 or WAV.
Is my file uploaded?
No. Merging happens entirely in your browser with the Web Audio API — nothing is uploaded.
How to Merge Audio
- 1
Add your files
Drop in two or more audio files — they're decoded in your browser.
- 2
Set the order and gap
Reorder the list and choose an optional silent gap between tracks.
- 3
Merge and download
Click Merge & download to save the joined file as MP3 or WAV.
Merge Audio — frequently asked questions
Do the files need to be the same format?+
No. Each file is decoded independently and resampled to a common rate, so you can mix MP3, WAV, M4A and more.
Is anything uploaded?+
No — every file is decoded and the merge is done in your browser.
Can I add a gap between tracks?+
Yes — a slider adds up to 5 seconds of silence between each file.
What order are they joined in?+
The order in the list — use the up/down arrows to rearrange before merging.
Do you upload my files to a server?+
No — every tool here processes your files entirely on your device, and nothing is uploaded to a server. The only exception is the AI tools, which send the extracted text (not the file) to Claude to do their work.
Is there a file size limit?+
There's no artificial limit we impose, but since processing happens in your browser, very large files (500+ MB or 1,000+ pages) are limited by your device's memory rather than by us.
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