Audio Merge
Merge Audio Online Free. Combine multiple audio files into one without re-encoding. No upload required. Supports MP3, WAV, AAC, OGG.
Add Audio Files
Click to browse or drag and drop multiple audio files
Supported formats: MP3, WAV, OGG, M4A, AAC, FLAC
How the Audio Merge Tool Works
This online audio merge tool uses a high-performance FFmpeg engine compiled to WebAssembly. Your audio files are joined directly in your browser, so nothing is uploaded or stored on external servers.
1. Add your audio files
Click the upload area or drag and drop multiple audio files such as MP3, WAV, OGG, M4A, AAC, or FLAC. The tool builds a queue and shows you the total duration and size.
2. Arrange order and choose settings
Reorder tracks by dragging, then pick how they should be merged: direct join, crossfade, or silence between clips. You can also normalize volume and choose the final output format.
3. Merge and download
Click Merge Audio Files to start processing. After the merge is complete, preview the combined track in your browser and download it as a single audio file.
Key Features & Benefits
Combine multiple audio clips into one seamless track for podcasts, playlists, intros/outros, and more without installing desktop software.
Private & secure
All merging happens locally in your browser. Your audio files are never uploaded, so personal recordings and client projects remain fully confidential.
Merge many files at once
Build a queue of multiple clips, reorder them with drag and drop, and join everything into a single track in just one processing step.
Flexible transitions
Choose between instant cuts, smooth crossfades, or small gaps of silence to match the style of your podcast, playlist, or audio project.
Consistent loudness
Use volume normalization so songs and voice clips play back at a similar level, avoiding sudden jumps in loudness between segments.
Works on any device
Run the merge tool on Windows, macOS, Linux, or mobile devices using any modern browser such as Chrome, Firefox, Edge, or Safari.
Free with no watermarks
Merge as many audio files as you need. There are no sign-ups, subscriptions, or watermarks on the merged output.
Frequently Asked Questions
Answers to common questions about merging audio files directly in your browser.
No. All merging is performed locally in your browser using WebAssembly. Neither the original clips nor the merged file are uploaded to any server.
You can combine popular formats like MP3, WAV, OGG, M4A, AAC, and FLAC in a single queue. The tool converts them internally so they can be merged and exported as your chosen output format.
Direct joining and transitions do not reduce quality by themselves. If you export to a lossy format like MP3, some compression is applied, but for most uses it is barely noticeable. For maximum quality, choose WAV or FLAC as the output format.
Yes. The tool works on most modern mobile browsers. For the best experience, avoid merging extremely large or very long files on low-memory devices.
There are no artificial limits or daily quotas. The main constraint is your devices memory and browser capabilities when handling very large queues or high-resolution audio files.
No installation is required. Open this page in your browser, add your audio files, choose your settings, and download the merged track when it is ready.