Need to join several tracks, assemble a set or a demo from pieces, or stitch voice memos and recording parts into one file? All of that is done online, right in your browser — add the pieces, set the order and get one even file, no software and nothing uploaded.
When merging is handy
Assemble a set or mix from several tracks.
Stitch recording parts, voice memos or takes into one file.
Build a demo from the best parts of different versions.
Join intro, verse and chorus in the order you want.
How to merge in 4 steps
1. Add several files at once — each becomes a clip in the list.
2. Set the order with the ↑↓ arrows; duplicate a piece if needed.
3. Trim each clip on the waveform and enable fades for smooth joins.
4. Click "Build & download" — all pieces are joined into one MP3 or WAV.
Different formats, even sound
You can mix mp3, wav, m4a and ogg in one project — on build everything is unified to a single 44.1 kHz stereo, so the final file sounds even, with no jumps in loudness or sample rate. To avoid clicks at the joins, enable fade-out at the end of a piece and fade-in at the start of the next.
✂ Audio Joiner — free
Add pieces, set the order and merge into one MP3 or WAV — right in the browser, nothing uploaded.
Add all the files — each becomes its own clip in the list. Arrange them in order with the arrows, optionally trim each, enable fades and click "Build & download" — the pieces are joined back-to-back into one file.
Can I merge different formats together?
Yes. You can mix mp3, wav, m4a, ogg — on build everything is normalised to a single 44.1 kHz stereo, so the final file sounds even.
How do I remove clicks at the joins?
Enable fade-out at the end of one piece and fade-in at the start of the next — the transitions become smooth, with no clicks.
Is it free and private?
Fully free, no limits. Nothing is uploaded — the merge runs locally in your browser, the audio never leaves your device.