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Audio Merge Online Free — PrivaTools

TL;DR: Upload 2+ audio files and download a single merged track — concatenates in upload order.

Merge audio files online for free — concatenate MP3, WAV, OGG, FLAC, or AAC tracks into a single seamless audio file. Free FFmpeg-powered tool.

Every PrivaTools tool — including Audio Merge — is genuinely free with no premium tier, no per-day limit, and no watermark on the output. Files are deleted from the server within seconds of your download completing. Source code: github.com/taiyeba-dg/privatools.

How to Use Audio Merge

  1. Upload audio files — Drop 2 or more audio files (MP3, WAV, OGG, FLAC, AAC). Maximum 200 MB per file.
  2. Reorder if needed — Drag thumbnails to set the concatenation order.
  3. Download the merged audio — FFmpeg concatenates the files into one output. Format defaults to the first input's format.

Frequently Asked Questions

What if my files have different sample rates?

FFmpeg resamples to a common rate (usually 44.1 kHz) automatically. There may be a tiny re-encoding loss; for lossless concatenation use FLAC inputs.

Are gaps between tracks added?

No — files are concatenated seamlessly. To add silence, prepare it as a separate file with the same format and insert it in the order.

Maximum total length?

Practical limit is whatever fits inside the 500 MB output. Hours of MP3 at moderate bitrate is fine.

Last reviewed 2026-05-01 by the PrivaTools maintainers. Source code on (MIT-licensed, self-hostable).

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