Audio joiner
Join several songs or recordings into one audio file.
Runs in your browser. Your file is never uploaded.
Join MP3s and other audio files into one
Audio Joiner merges several audio files end to end into one. Mix formats freely: an MP3, a WAV and an M4A go together without converting them first, and differences in sample rate and channels are matched automatically. Add a gap of silence between tracks if you like.
It runs in your browser, so recordings and songs aren't uploaded.
Audio joiner in short
Add two or more audio files, in any mix of formats, then put them in order and add a gap between tracks if you like, then pick the format, select Join and download. It's free, there's no sign-up, and it runs in your browser, so the file never leaves your device.
How to use Audio joiner
- 1
Add your files
Choose two or more audio files. Any mix of formats works.
- 2
Put them in order
Use the arrows to move tracks up and down.
- 3
Add a gap
Optionally put up to ten seconds of silence between tracks.
- 4
Join and download
Pick the format and select Join audio.
Good to know
- Files with different formats, sample rates or channel counts are matched automatically.
- The first time you use an audio or video tool, your browser downloads our 31 MB processing engine. It's kept for next time, so later runs start straight away.
- This tool runs in your browser. Very large files depend on your device's memory.
Ideas
Mixtapes and playlists
Join songs into one continuous file.
Podcast episodes
Add an intro and outro to a recording.
Split recordings
Join a recording that was saved in parts.
Audiobook chapters
Combine chapter files into one.
Why use ConvertFile
Mix any formats
MP3, WAV, M4A, OGG and FLAC can be joined without converting first.
Gaps between tracks
Add silence between tracks, or none for a continuous mix.
Never uploaded
Your audio is processed by your own browser and handed back as a download. It isn't sent to our servers, so there's nothing for anyone to see, keep or leak.
No watermark, no sign-up
The file you download is yours as it is: no logo stamped on it and no account needed. It's free for files up to 500 MB.
Supported formats
- Opens
- MP3WAVM4AAACOGGFLACOpusWMAAIFFMP4 and other videos (sound only)
- Saves as
- MP3WAVM4A (AAC)OGG (Vorbis)FLACOpus
Audio joiner: common questions
- How do I merge MP3 files for free?
- Add the MP3s, put them in order and select Join audio. Save as MP3 or another format.
- Can I join files with different formats?
- Yes. They're matched to one format and sample rate automatically.
- Can I crossfade between tracks?
- Not yet. You can add a gap, or trim each track with a fade in Trim audio before joining.
- Is Audio joiner free?
- Yes. Audio joiner is free, works without an account and adds no watermark, for files up to 500 MB. Pro raises that to 2 GB.
- Are my files uploaded to a server?
- No. Audio joiner runs in your web browser, so the file is read on your own device and never sent to ConvertFile.
- Does Audio joiner work on Mac, Windows, Android and iPhone?
- Yes. It runs in any modern web browser, with nothing to install. Very large files work best on a desktop or laptop, because in-browser tools use your device's memory.