Audio Joiner

Audio Joiner Online

Combine multiple audio files into one MP3 online. Upload tracks in order and download the joined result.

How to join audio files into one MP3

  1. Select between 2 and 20 supported audio files from your device.
  2. Check the file order before uploading; the tracks are joined in the order submitted.
  3. Confirm permission and select Join audio.
  4. Download the MP3 and listen to the joins before sharing the recording.

Supported inputs

  • Uploaded MP3, WAV, M4A, FLAC and OGG files
  • Files within the configured upload limit

Available outputs

  • One MP3 containing the tracks in sequence
  • 192 kbps stereo audio at 44.1 kHz

Why use this tool

Common problems

The file is rejected
Choose a supported audio format within the upload limit.
Processing fails
The source may be damaged or use a codec unavailable to the server FFmpeg installation.

Frequently asked questions

Can I combine MP3, WAV, M4A, FLAC and OGG files?
Yes. Supported inputs are converted to the same MP3 audio settings before they are joined. The final download is an MP3.
Does joining audio mix the tracks together?
No. Each track plays after the previous one. This tool does not overlay background music, mix simultaneous tracks or add crossfades.
Is joining audio lossless?
No. The files are encoded to 192 kbps stereo MP3 at 44.1 kHz. Keep your original recordings if you need them for further editing.
Are the original files changed?
The files on your device are unchanged. The service creates a temporary output for you to download.

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