How to merge and combine audio files online
Add your files
Drop in two or more audio files — MP3, WAV, M4A or OGG. They're decoded on your device; nothing is uploaded.
Set the order
Use the arrows to arrange your tracks. Add a crossfade for a smooth blend between them, or a gap of silence if you prefer.
Download
Preview the joined result, then save your combined songs as a single MP3 or WAV file — no signup and no watermark.
What you can do with the audio combiner
An audio joiner is one of those tools you reach for more often than you'd expect. Use it to combine songs into a single continuous mix, join podcast segments and interview clips into one episode, stitch together voice memos or audiobook chapters, or merge sound effects and music beds into a single file. Because it can concatenate any number of tracks, it works equally well for a quick two-file join or building a long playlist from dozens of clips. Whether you need to merge MP3 files for a mixtape, combine WAV recordings for a project, or join M4A voice notes into one, the process is the same: add your files, set the order, and export.
Are my files uploaded anywhere?
No. The merge happens entirely in your browser using the Web Audio API. Your files never leave your device, which makes it faster and completely private.
How many audio files can I combine at once?
As many as you like — add two or more and keep adding. You can combine MP3 files, merge songs, or join dozens of clips into one; the only practical limit is your device's available memory for very large combined files.
How do I join audio files into one?
Add the files you want to join, drag them into the order you want, and press download — the tool will merge multiple tracks into a single audio file. You can join audio files of different formats together, and add a crossfade or fades for a more polished result.
What is a crossfade?
A crossfade blends the end of one track into the start of the next so there's no hard cut between them. We use an equal-power crossfade, which keeps the perceived volume steady through the transition for a natural sound. Set it to zero for a clean, gapless join instead.
Can I merge files with different formats or quality?
Yes. Files are decoded and combined on a shared timeline, so you can mix MP3, WAV, M4A and OGG together. For the cleanest result, start from the highest-quality sources you have.
Will merging reduce the audio quality?
The merge itself is lossless. If you export as WAV the result is uncompressed; if you export as MP3 it's encoded at 192 kbps, which is transparent for most listening.