How to Merge Audio Files
Drag two or more MP3, WAV, OGG, or AAC files into the area above, or click "Choose Files" to select several at once. Each file appears in a list in the order it will be joined — use the up and down arrows next to a track to move it, or the × button to remove one you don't want. You can keep clicking "Add Files" to bring in more tracks at any point before exporting.
If you want a brief pause between clips instead of joining them back-to-back, pick a gap length from the "Gap Between Tracks" menu — this inserts silence of that length between every pair of tracks. Use "Preview Merged Audio" to listen to the full combined result before committing, then choose WAV, MP3, OGG, AAC, or FLAC and click "Merge & Download" to save the combined file to your device.
Tracks with different sample rates or channel counts (mono vs. stereo) are automatically matched up so they play back correctly together — all of this happens using your browser's built-in Web Audio API, with no file ever leaving your device.
Your Privacy Matters
None of your audio files are ever uploaded to our servers; every step — decoding, merging, and re-encoding — happens entirely in your device's memory, inside your browser. Once you close the page, everything is cleared automatically.
Frequently Asked Questions
How many files can I merge at once?
There's no hard limit built into the tool — you can add as many files as you like. In practice, the number you can comfortably merge depends on your device's available memory, since every file is decoded and held in your browser at once.
Can I merge files with different formats or sample rates?
Yes. You can mix MP3, WAV, OGG, and AAC files in the same merge, and files with different sample rates or channel counts (mono/stereo) are automatically converted to match before joining.
Are my files uploaded to a server?
No. Every file you add is read and processed entirely inside your browser using the Web Audio API. Nothing is ever sent over the internet.
Which output formats are available?
You can download the merged result as lossless WAV or FLAC, or as MP3, OGG (Vorbis), or AAC (M4A) at your choice of bitrate (128/192/320 kbps) for a smaller file.