Audio Merger

Concatenate multiple audio files in order. Processed entirely in your browser — files are never uploaded.

Click to choose audio files, or drag them here (multiple allowed)

Supports MP3 / WAV / M4A / AAC / OGG / FLAC, etc.

Max 2GB per file. More files mean slower processing — compress first if needed.

The first run loads an ~30MB FFmpeg engine from CDN, then it is cached. Same-format tracks prefer stream copy; mixed formats are re-encoded then joined.