Merge Audio

About Online Audio Merger & Joiner

Our free online audio merger lets you combine multiple audio files into one seamless track directly in your browser. Whether you need to join podcast segments, assemble an audiobook, or create a continuous music mix, this audio joiner tool makes it simple to merge up to 50 files in any order you choose.

Powered by the Web Audio API, this audio combiner supports all major formats including MP3, WAV, AAC, OGG, M4A, and FLAC. Each file can be up to 200MB, and you have full control over the playback order with easy-to-use reordering controls. The merged output is saved as a high-quality WAV file to preserve maximum audio fidelity.

All merging happens locally on your device, which means your audio files are never uploaded to any external server. This privacy-first audio merger ensures your content stays completely under your control while delivering fast, professional-quality results every time.

Key Features

• Merge up to 50 audio files into a single continuous track
• Support for MP3, WAV, AAC, OGG, M4A, FLAC, and WebM input formats
• Custom file ordering with move up and move down controls
• Individual audio preview and playback for each file before merging
• File size display and total duration calculation
• 200MB per-file size limit for handling large recordings
• High-quality WAV output preserving original audio fidelity
• Built-in player for the merged result with instant playback
• One-click download of the final merged audio file
• 100% browser-based processing for complete privacy and security

How to Merge Audio Files Online

1. Add your audio files: Click "Choose Audio Files" to select multiple audio files from your device. You can add files in batches or one at a time.
2. Arrange the order: Use the up and down arrow buttons next to each file to set the exact playback sequence. Files are merged from top to bottom.
3. Preview individual tracks: Click the play button on any file to listen to it and verify it is the correct audio before merging.
4. Merge the files: Click "Merge Audio Files" to combine all selected files into a single continuous track. The tool processes them in the order shown.
5. Download the result: Listen to the merged audio using the built-in player, then click "Download Merged Audio" to save the combined file to your device.

Use Cases

• Podcast assembly: Combine intro music, main episode content, ad segments, and outro into a polished, ready-to-publish podcast episode.
• Audiobook creation: Join separately recorded chapters into a complete audiobook file for distribution or personal use.
• Music compilations: Create continuous DJ mixes, album compilations, or workout playlists by merging individual tracks together.
• Lecture compilation: Combine multiple lecture recordings or training sessions into a single, easy-to-follow educational resource.
• Voiceover production: Merge narration segments, background music, and sound effects into a complete voiceover track.
• Meeting recordings: Join split meeting recordings from different sessions into one continuous file for easy reference.
• Language learning: Combine vocabulary drills, pronunciation exercises, and listening passages into comprehensive study audio.
• Event highlights: Merge memorable audio moments from events, ceremonies, or performances into a single keepsake recording.

Frequently Asked Questions

Tips & Best Practices

• Preview before merging: Listen to each individual file to confirm the correct audio and order before initiating the merge process.
• Match sample rates when possible: For the best results, try to use source files with the same sample rate (e.g., all at 44.1kHz or all at 48kHz).
• Order files carefully: Use the arrow controls to arrange your files in the exact sequence you want. The final output follows this order precisely.
• Add silence between tracks manually: If you need gaps between segments, record a short silence file and add it between your audio tracks in the list.
• Keep total file count manageable: While you can merge up to 50 files, processing speed is better with fewer, larger files rather than many tiny clips.
• Convert output if needed: The merged WAV file can be large. Use our format converter tools to convert it to MP3 or another compressed format for easier sharing.