Audio Joiner
Turn separate recordings into one MP3 or WAV. Add your clips, arrange the order, and join them on your device.
How to join audio files in the right order
- Add your clips. Choose two or more recordings. Use Add audio files again to append another clip.
- Arrange the sequence. Move clips up or down, or remove a take you do not need. The first item plays first.
- Choose MP3 or WAV. MP3 is smaller for sharing; WAV is uncompressed and takes more space.
- Join, listen and download. Wait for the first engine download, keep this tab open, and check the finished audio before saving.
Blend transitions with crossfade
Set a crossfade from 0 to 5 seconds. Zero joins clips end to end; a positive value overlaps and blends each boundary, making the result shorter. Every clip must be at least twice the crossfade duration. Start with a short transition and listen before exporting.
Combine a podcast intro, recording and outro
Place your intro first, then the recording segments, followed by the outro. This creates a continuous sequence. Simultaneous speaker tracks need a multitrack mixer instead.
Join separate voice recordings
Arrange recordings from a lecture, interview or voice memo in their intended order. For a shorter final file, trim unwanted sections before joining. To change the finished file format, use the audio converter.
Frequently asked questions
How do I combine multiple MP3 files into one?
Add at least two files, arrange them with the up and down buttons, choose MP3 or WAV, and press Join Audio. Listen to the result, then download it. You can add more files without replacing the existing list.
Can I join voice memos or podcast segments?
Yes, when their audio format is supported. Put an intro, recording segments and an outro in playback order. The clips play one after another; optional crossfades blend adjacent clips. This tool does not mix simultaneous speaker tracks.
What formats and file sizes can I use?
Choose 2–10 audio files, up to 100 MB each. Common inputs include MP3, WAV, M4A, AAC, OGG, FLAC and Opus, depending on the codec. Export as MP3 or WAV. Long recordings can need substantial device memory.
Do my audio files leave my device?
Your audio is processed on this device and is not uploaded to a server. The page downloads its processing engine and uses site analytics as described in the Privacy Policy.
Should I choose MP3 or WAV?
MP3 creates a smaller file for sharing and re-encodes the audio. WAV exports uncompressed audio and is usually much larger. Converting an MP3 to WAV does not restore quality already lost in the source.
Why did a merge fail?
Keep the tab open while the engine loads. If a file fails, try two short WAV or MP3 clips first, then add the remaining recordings one at a time. An unsupported codec or a device memory limit can prevent a merge. No account is required to retry.