Merge Audio

Add two or more audio files. Put them in the order you want them to play — the first file in the list plays first. Choose MP3 or WAV, click Merge, and preview the combined track before downloading it as one file.

Merging is useful for combining voice notes into one recording, joining the parts of a podcast or audiobook, building a continuous playlist or workout mix, or attaching an intro and outro to a recording.

Files are joined end to end with no gap and no crossfade. If the clips have very different loudness, adjust them first with Change Volume so the merged track sounds even. Files recorded at different sample rates are converted to a common rate, and a mono file joined with stereo files is played in both channels.

Every file is decoded into memory before merging, so combining many long tracks can be slow or fail on devices with little memory. If that happens, merge in smaller batches and then merge the results — saving the batches as WAV avoids losing quality in between.

Most online converters upload your file to a server, process it there and send it back. all in tool works differently: the processing code is downloaded to your browser and runs on your own device. Your file is read from your disk into memory, transformed, and handed back to you as a download. It is never sent over the network, so there is nothing for us — or anyone else — to store, read or leak.

You can confirm this yourself: once the page has loaded, you can disconnect from the internet and the tool keeps working. This also means speed depends on your device rather than your connection, which is usually much faster for large files.