Free Audio Merger - Merge MP3, WAV, M4A Files in Your Browser

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Computer Published date: 10/07/2026

Audio Merger is a free browser-based audio merger. Users add multiple audio files, reorder and trim them, set a pause or smooth crossfade at each junction, preview every junction, then export a single MP3 or WAV. All processing is local (FFmpeg WebAssembly); files are never uploaded.


Features:



  • Merge MP3, WAV, M4A and other formats into one file

  • Reorder and trim clips

  • Pause or crossfade at each junction

  • Junction-by-junction preview listening

  • Export to MP3 or WAV

  • Runs locally in the browser, no upload, no sign-up


Free, no sign-up, no upload. Available in English and Spanish.

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Useful information

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  • This site is never involved in any transaction, and does not handle payments, shipping, guarantee transactions, provide escrow services, or offer "buyer protection" or "seller certification"