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Free Online Audio Joiner

Merge mixed audio formats, reorder and trim every track, add gaps or crossfades, and export one finished file.

Upload Audio Tracks to Join

Drop two or more audio tracks here, or import from:

Add two or more audio tracks to start.

What is an audio joiner?

An audio joiner combines multiple files into one continuous track. It is designed for sequencing complete songs, recordings, chapters, or clips rather than making many edits inside one source.

Files can use different supported formats because the browser prepares them for one common timeline before export.

Combine mixed audio formats

Add MP3, WAV, M4A, FLAC, OGG, AAC, AIFF, Opus, and other supported sources to the same sequence.

Drag tracks into order

Change the playback sequence, preview individual tracks, and remove anything that should not be included.

Trim and transition

Adjust the usable range of each track, add edge fades, or crossfade smoothly into the next file.

Export one audio file

Preview the complete sequence and download MP3, WAV, M4A, FLAC, OGG, or AAC output.

How to join audio files online

Merge mixed audio formats, reorder and trim every track, add gaps or crossfades, and export one finished file.

  1. 1

    Add two or more files

    Drop the audio tracks into the uploader in any supported combination of formats.

  2. 2

    Arrange the sequence

    Move tracks up or down until they play in the intended order.

  3. 3

    Trim and add transitions

    Set the usable range of each track and enable fades or crossfade where needed.

  4. 4

    Preview, join, and download

    Listen through the complete timeline, choose an output format, and create one file.

Ways to combine audio files

Join voice recordings

Combine separate interview answers, voice memos, lessons, or narration takes into one file.

Create a continuous music sequence

Arrange songs or mixes and use crossfade for smoother transitions.

Assemble chapters

Join audiobook, course, meditation, or presentation sections in the correct order.

Combine audio from different sources

Merge clips delivered as MP3, WAV, M4A, FLAC, or another supported format.

Audio join transitions

Tool or settingWhat it doesBest for
No transitionOne track starts immediately after the previous trackChapters and cleanly edited clips
Fade edgesThe current track fades in or outSofter beginnings and endings
CrossfadeThe current and next tracks overlapMusic, ambience, and seamless sequences

Related audio editing tools

Continue with a more focused editor or return to the complete Audio Editor for a broader timeline workflow.

Frequently Asked Questions

How many audio files can I join?

The browser project accepts up to 10 tracks so memory use remains manageable.

Yes. Supported files are decoded to a common timeline and exported in the format you choose.

Yes. Use the move controls to arrange the exact final playback sequence.

Yes. Select each track and adjust its start and end range before export.

Crossfade overlaps the end of one track with the beginning of the next for a smoother transition.

Yes. The complete rendered sequence can be previewed before downloading.