Audio Joiner
Drop clips. Drag to reorder. Optional crossfade between them. Get one combined file as MP3 or WAV. The audio never uploads.
drop clips here
Add MP3, WAV, M4A, FLAC, OGG, AAC. Drop more later to append.
How it works
We decode every clip into the same sample rate, then concatenate the PCM samples (with an optional linear crossfade at each boundary), and finally encode the result as MP3 or WAV. The whole thing runs in your tab.
Clips with different sample rates are resampled to the highest one in the set, so you don't get pitch shifts. Channel counts are normalized to stereo if any input is stereo.
FAQ
Are my clips uploaded?
No. The joiner runs entirely in your browser.
How many clips can I join?
Practically, around 20–30 clips of a few minutes each. The limit is browser memory, not the tool.
Can I add fades between clips?
Yes — pick a crossfade length in the controls.
Mixed formats?
Fine. MP3 + WAV + M4A in one join is supported.