How to Merge Audio Files into One (Free)
Stitching clips together — chapters of an audiobook, parts of a podcast, a playlist into one file — is tedious in a full editor. The Audio Joiner merges multiple files into a single MP3 in your browser, in the order you add them, with no upload.
What you can merge
Combine recorded segments into one file, join podcast intro, body and outro, stitch audiobook chapters, or merge voice notes. The tool handles different input formats and resamples them into one consistent MP3, so mismatched files still join cleanly.
How to merge audio files
- Open the Audio Joiner and add two or more files. 2. They'll be joined in the order listed — remove any you don't want. 3. Click join and download the combined MP3. The processing is local, so your audio stays private.
Before and after merging
If the parts have different volumes, even them out first with the Volume Booster (normalize). After merging, trim any gaps with the Audio Trimmer. Explore all the free audio tools for the rest of your workflow.
Frequently asked questions
How do I combine MP3 files into one?
Open the Audio Joiner, add your files in order, click join, and download the single merged MP3 — free, in your browser.
Can I merge different formats?
Yes. The tool decodes each file and merges them into one consistent MP3, even if the inputs differ.
What order do they play in?
They join in the order you add them, so arrange them accordingly.
Is my audio uploaded?
No. Merging happens in your browser, so your files never leave your device.
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