Merge Audio

Join audio files in sequence or mix them simultaneously

Drop audio files here

MP3, WAV, OGG, FLAC, M4A — minimum 2 files

Free Audio Joiner — Merge and Mix Audio Files Online

ezyimg's Audio Merge tool joins multiple audio files into one. Choose sequential mode to play tracks one after another, or mix mode to overlay them simultaneously. Supports MP3, WAV, FLAC, OGG, and M4A — all processed locally in your browser.

How to Use

  1. 1

    Choose merge mode

    Select 'In Sequence' to join tracks end-to-end, or 'Mix Simultaneously' to overlay all tracks at the same time.

  2. 2

    Upload audio files

    Drag 2 or more MP3, WAV, OGG, FLAC, or M4A files into the upload area.

  3. 3

    Reorder files (sequence mode)

    Drag rows to set the order tracks will play in when using sequence mode.

  4. 4

    Merge

    Click Merge. Processing runs in your browser using WebAssembly. Output is always MP3.

  5. 5

    Download the merged audio

    Listen with the built-in player and download the merged MP3 file.

Tips & Best Practices

  • →Sequence mode is best for joining podcast segments, chapters, or song parts.
  • →Mix mode is best for overlaying a background music track with a voiceover.
  • →Drag rows to change the playback order before merging in sequence mode.
  • →All input formats are supported — the output is always MP3 for maximum compatibility.

Frequently Asked Questions

How do I merge MP3 files online for free?

Upload 2 or more MP3 files to ezyimg's Audio Merge tool, arrange them in order, and click Merge. The files are joined end-to-end and exported as a single MP3.

How do I mix two audio tracks together?

Select 'Mix Simultaneously' mode, upload your audio files, and click Mix. Both tracks play at the same time in the output — useful for adding background music to a voiceover.

Can I join WAV and MP3 files together?

Yes. The tool accepts mixed formats — you can upload a WAV and an MP3 together and they will be merged. The output is always MP3.

How many audio files can I merge at once?

There is no fixed limit. You can add as many files as needed. Processing time increases with the total audio duration.

Does merging audio reduce quality?

In sequence mode, audio is copied without re-encoding where possible. In mix mode, the tracks are combined and re-encoded as MP3 at a good quality level.