Audio Merger - Free Offline Tool (No Upload)

Merge multiple audio files into one in your browser. 100% offline - no upload, no account, no data sent to any server. Free.

No Upload 100% Private Free
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Loading Audio Processing Engine

Uses FFmpeg.wasm. First use downloads ~25MB (cached after).

Initializing...

Drop your audio files here

or click to select files (up to 10)

Supported: MP3, WAV, FLAC, OGG, M4A, AAC

Frequently Asked Questions

Can I merge different audio formats?

Yes! This tool automatically re-encodes files to the same format before merging. Select MP3 or WAV as your output format.

Can I reorder the files?

Not yet. Files are merged in the order you select them. Select them in the order you want them merged.

Does this audio merger work offline?

Yes. FFmpeg.wasm runs entirely in your browser. Your files never leave your device.