Merge Audio Files Online
Combine multiple audio files into one, in any order you choose - even if they started in different formats.
Drag & drop files, or browse
Up to 15 audio files at once
How it works
Upload audio files
Add 2 to 15 files, any supported format.
Arrange the order
Reorder with the up/down arrows.
Merge and download
Pick an output format, then save the combined file.
This tool uses FFmpeg's concat filter (compiled to WebAssembly), which decodes each input file and stitches them into one continuous audio stream before re-encoding to your chosen output format - this is what makes merging files of different formats or sample rates possible, unlike a simple file concatenation.
Frequently asked questions
4 questionsYes - you can combine an MP3, a WAV, and an M4A into a single output file. Each input is decoded and re-encoded into your chosen output format so they play back as one continuous, consistent track.