Audio joiner
Join audio files into one for free: MP3, WAV, M4A, and more, in any order, with an optional crossfade. Nothing is uploaded, and there's no watermark.
Drop the audio files to join
Add two or more songs or recordings, put them in order, and save them as one file. Nothing is uploaded.
MP3, M4A, WAV, FLAC, and other audio, or a video with sound. You can also drag in a whole folder.
How to combine audio files into one
Add two or more songs or recordings, put them in order, choose a crossfade if you like, and save them as one MP3, WAV, or M4A. The files can be different formats, and a video's sound can join too. It's a quick way to merge MP3 files, put voice notes together, or make one track from several takes, and it all runs in your browser.
Step 1
Add your filesTwo or more MP3s, WAVs, M4As, or videos.Step 2
Put them in orderMove each up or down, and pick a crossfade.Step 3
Join and downloadOne file in the format you choose.
What to expect
- Supported inputs
- MP3, WAV, M4A, AAC, FLAC, OGG, Opus, AIFF, and other audio files, and videos (MP4, MOV, MKV, WebM) with sound.
- What happens
- Every file is decoded and saved again as one track, at the first file's sample rate and in its format unless you choose MP3, WAV, or M4A. With a crossfade, each file fades into the next over 1 to 3 seconds.
- Limits
- The files play whole; cut each one first with the audio cutter to keep only part of it. Very long joins take a while on a phone.
Private by design
Your video stays on your device
Mastershot processes your file locally in this browser. It does not need to be uploaded to a server, and you do not need an account to use the tool.
- No upload
- No signup
- No watermark