Free Online Audio Joiner
Stitch two or more clips into one file, in the order you set.
What is this tool
AudioToolKit joins audio files online for free. Add two or more clips in MP3, WAV, M4A or other formats, drag them into the order they should play, and download a single track. Files with different formats and sample rates are decoded and joined into one output, which makes it a fast online alternative to stitching clips in a DAW.
Drag and drop your files here
or
MP3, WAV, M4A, AAC, OGG, FLAC, AIFF, AIF, OPUS, WMA, AMR — up to 25 MB per file
Output
One combined audio file
Accepted formats
.mp3, .wav, .m4a, .aac, .ogg, .flac, .aiff, .aif, .opus, .wma, .amr
Why use this free tool
Interviews, podcast segments and voice notes often arrive as separate files. Drop them in, drag to set the order, and download a single track.
How does the free concatenate audio work?
- 1
Add at least two audio files.
- 2
Drag them into the order they should play.
- 3
Press Concatenate and download the single file.
Frequently asked questions
Do the files need to match?
No. Different formats and sample rates are decoded and joined into one output.
How many clips can I join?
At least two. Pro can join up to 20 in one task. Free joins within the one-file batch limit, so longer joins need Pro.
Can I pick the format?
Yes. MP3 is the default. WAV, M4A, FLAC, OGG and AIFF are available too.
Related tools
More answers in the Help Center.