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Gratis Audio Joiner

Merge multiple audio files into one, in any order, with optional crossfade. Export as MP3, M4A, or WAV. Runs entirely in your browser — no upload.

Sin límite de tamaño de archivoLos archivos permanecen privadosSin necesidad de registroGratis para siempre

Arrastra archivos aquí o haz clic para explorar

MP3, WAV, FLAC, OGG, AAC, M4A, Audio sin límite de tamaño de archivo

Puedes soltar varios archivos a la vez

Explorar archivos

Tus archivos nunca salen de tu dispositivo. Todo el procesamiento se realiza localmente en tu navegador.

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Stitching audio files together normally means an upload to an ad-heavy site. This merges them with the real FFmpeg engine running in your browser.

1
FFmpeg.wasm loads once
The WebAssembly build of FFmpeg (~30 MB) downloads on first use and is cached afterwards.
2
You add and order your files
Drop in multiple audio files and arrange them with the up/down controls. Nothing is uploaded.
3
FFmpeg concatenates them
The tracks are joined in order — back-to-back, or with a smooth crossfade between each — using FFmpeg's concat/acrossfade filters, all on your CPU.
4
Download the merged file
The result is encoded once to MP3, M4A, or WAV and offered for download.