Audio Merger

Merge multiple audio files

Combine audio files into one with smooth transitions. Crossfade, fade, gap, or reverse effects between tracks. 100% private -- runs in your browser.

Drop your audio files here

or click to browse (select multiple)

FLAC WAV AIFF ALAC MP3 AAC OGG M4A OPUS

Decoding audio...

Frequently Asked Questions

You can merge any combination of FLAC, WAV, AIFF, MP3, AAC, OGG, M4A, and OPUS files. Files don't need to be in the same format -- the merger handles conversion automatically.

Yes. After adding files, drag the handle on each row to rearrange the merge order. The files will be combined in the order shown.

Choose from no transition (direct join), crossfade (smooth blend), fade in/out, silence gap, or reverse effect. You can set the transition duration from 0.1 to 10 seconds.

There's no hard limit, but merging many large files depends on your device's memory. Most devices handle 20+ files without issues.

Yes, 100%. All files stay on your device. Merging happens in your browser using Web Audio technology. Nothing is uploaded to any server.