Merge Audio
Combine multiple audio files into one track
Audio files
Files are joined from top to bottom. Drag them, or use the arrows, to change the order.
Result
Your result appears here.
Add at least two audio files to begin.
Good to know
- Files are joined end to end, without gaps or crossfades.
- MP3 output is 128 kbps and at most stereo. WAV output is 16-bit and keeps the largest channel count among the files.
- The size estimate assumes 44.1 kHz stereo for WAV and 128 kbps for MP3.
- At least two files are needed.
About Online Audio Merger & Joiner
Our free online audio merger joins several audio files into a single track: an intro, interview, and outro recorded separately for a podcast, chapter files for an audiobook, or songs for a workout mix. This audio joiner tool makes it simple to merge up to 50 files in any order you choose.
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 16-bit WAV file or a 128 kbps MP3, whichever you choose.
Your audio files stay on your device and are never uploaded to any 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
- 16-bit WAV or 128 kbps MP3 output
- Built-in player for the merged result with instant playback
- One-click download of the final merged audio file
- Your audio files are never uploaded
How to Merge Audio Files Online
- 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.
- 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.
- Preview individual tracks: Click the play button on any file to listen to it and verify it is the correct audio before merging.
- 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.
- 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
How many files can I merge at once?
You can merge up to 50 audio files in a single session. Each individual file can be up to 200MB in size, giving you plenty of capacity for even large projects.
Can I merge different audio formats together?
Yes, you can mix and match different audio formats in a single merge operation. The tool joins them end to end into a single WAV or MP3 file.
What is the output format?
You can save the merged audio as a 16-bit WAV file or a 128 kbps MP3 (up to stereo). For other formats, use our companion converter tools on the site.
Will merging reduce audio quality?
WAV output adds no compression, but every file is converted to your device's playback rate (usually 44.1 or 48 kHz) at 16-bit. MP3 output is compressed at 128 kbps, which is lossy.
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. Choose MP3 output for a smaller file, or use our format converter tools for other formats.