How to merge audio files online (free)
To merge audio files, open the Audio Joiner, add your tracks in the order you want, and download them as one continuous file — free, in your browser, with nothing uploaded.
Merge your files in 3 steps
- Open the Audio Joiner and add your files. Drag or choose several clips — they load locally in your browser and are never uploaded.
- Put them in order. Reorder the list with the ↑/↓ controls, and optionally set a crossfade to blend one track into the next; the total length updates as you go.
- Merge and download. Click join and save the combined track as MP3 or WAV — no watermark, no sign-up.
Mixing formats? The Joiner decodes each file and re-encodes one clean output, so you can combine an MP3, a WAV and an M4A into a single track.
Frequently asked questions
Is it free?
Yes — completely free, with no sign-up, no watermarks, and no limit on how many files you combine.
Are my files uploaded anywhere?
No. Merging happens locally in your browser, so your audio never leaves your device.
Can I merge files of different formats?
Yes — add MP3, WAV, M4A, OGG or FLAC together; the Joiner outputs one MP3 or WAV.
Will there be a gap between tracks?
No — by default the tracks are joined end to end with no added silence, in the order you arrange them. To blend one track into the next instead, set the crossfade slider.