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Merge Audio

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

How to Merge Audio

  1. 1

    Add your files

    Drop in two or more audio files — they're decoded in your browser.

  2. 2

    Set the order and gap

    Reorder the list and choose an optional silent gap between tracks.

  3. 3

    Merge and download

    Click Merge & download to save the joined file as MP3 or WAV.

Related PDF tools

Trim AudionewCut an audio file to just the part you want, with a visual waveform.Normalize AudionewEven out a quiet or inconsistent recording — peak-normalize or apply a fixed gain.Audio ConverternewConvert MP3, WAV, M4A, AAC, FLAC or OGG to MP3 or WAV — entirely in your browser.Extract Audio from VideonewPull the soundtrack out of an MP4, MOV or WebM video 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.