Is this tool really offline?

Yes. All processing happens locally in your browser. Your files never leave your device.

Yes, completely free with no registration required.

Absolutely. No files are uploaded to any server. Everything stays on your device.

JavaScript is required to use these tools. Please enable JavaScript in your browser settings to convert files.

Zero-Server Storage · 100% Private Your files are processed entirely in your browser. Nothing is uploaded, stored, or seen by anyone — safe for confidential & GDPR/HIPAA-sensitive documents.

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

You might also need:

MP3 Cutter WAV to MP3 MP4 to MP3 FLAC to MP3 Speed Changer

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.