Join multiple audio files into one, with adjustable gaps or crossfades. Sample-exact, no re-compression. Runs in your browser — nothing uploaded.
First time here? Drop in your audio files Your input is processed locally and disappears when you close the tab.
Joining audio files is the sort of task that usually means installing something, or uploading recordings you would rather not hand over. This free tool to merge audio files online does it in the browser using the Web Audio API.\n\nDrop in as many clips as you like in any format your browser can decode — MP3, WAV, M4A, OGG, FLAC — reorder them, and merge. Each clip has a player so you can confirm what you are joining before you commit. A gap control inserts silence between clips, or a crossfade overlaps and fades between them for a continuous mix.\n\nOutput is WAV, deliberately. The join itself is sample-exact, so nothing is re-compressed and no generation loss is introduced. Encoding straight to MP3 here would stack a fresh lossy pass on top of whatever your sources already went through; converting the finished WAV once with the Audio Converter costs a single encode instead of two.\n\nClips are mixed at the highest sample rate and channel count present, so a stereo file is never downgraded to match a mono one. WAV is uncompressed, which means roughly 10 MB per minute of stereo — the honest cost of not re-encoding. Pair it with the Audio Trimmer to tidy clips first, or the Audio Converter to compress the result.
Drop in your audio files
Reorder them with the arrows
Set a gap or a crossfade
Merge and download the WAV
Drop audio files, or click to browse
MP3, WAV, M4A, OGG, FLAC · joined in the order shown below
Output is WAV, and deliberately so. Joining is sample-exact — nothing is re-compressed, so no generation loss is introduced. Converting the result to MP3 afterwards with the Audio Converter costs you one encode instead of two.
Clips are mixed at the highest sample rate and channel count present, so a stereo file is not downgraded to match a mono one. WAV is uncompressed, so expect roughly 10 MB per minute of stereo.