Merge Audio · MP3/OGG/M4A · Free · No Upload
Merge Audio Online Free — Combine MP3, OGG, and M4A into One File
Combine multiple audios into a single MP3, in any order, right in your browser. Free and private: nothing is sent to servers.
100% local processing: your file never leaves your device. Once the page loads, it even works offline.
Supported formats:Multiple audio files — MP3, OGG, M4A, WAV (up to 300 MB each) · Video and virtually any audio format are also accepted — we extract the audio automatically.
How it works
- 01
Upload audios in your desired order
Add 2 or more files (MP3, OGG, M4A, WAV...). The upload order is the order in the final file.
- 02
Merging happens in your browser
Files are normalized and concatenated locally — nothing is sent to servers.
- 03
Download the single audio
A continuous MP3 with all clips, ready to share, edit, or transcribe.
Frequently asked questions
Why merge audio online?
Combine multiple WhatsApp audios, interview clips, or recording chapters into one MP3 file, in the order you choose.
What if I need the text from this audio?
After merging, you can transcribe the file with AI on VoxScriber: 30 free minutes per month, with automatic punctuation and speaker identification. Ideal for WhatsApp audios, meetings, and interviews.
Is the Merge Audio Online Free really free?
Yes, free and unlimited. Processing happens in YOUR browser (WebAssembly), so we have no server costs — and no account needed.
Is my file sent to any server?
No. All processing is local (FFmpeg compiled to WebAssembly running on the page). The file never leaves your device — it even works offline after the page loads.
Is there a file size or quantity limit?
The limit is 300 MB per file (browser memory). No limit on number of uses. For larger files, VoxScriber processes on the server with uploads up to 5 GB.
Does it work on mobile?
Yes — any modern browser (Chrome, Safari, Firefox, Edge) on desktop or mobile. On older phones, large files may take longer.
Need the text from this audio? Transcribe with AI — 30 min free
Create free account →30 minutes/month free. No credit card required.