Free Online Audio Joiner
Merge multiple audio tracks into one
What is an audio joiner?
An audio joiner merges multiple audio files into a single continuous track. RemoveVocals Audio Joiner lets you drag-and-drop unlimited MP3, WAV, FLAC, OGG or M4A files, reorder them freely, add optional crossfades, and export a single high-quality WAV — all in your browser with no signup and no upload.
Upload & Merge Your Files
Drag and drop your audio file here
or
Why Use Our Free Audio Joiner?
100% Private
Your audio files never leave your device. All merging runs locally in your browser — zero server uploads, zero data collection.
No File Limits
Merge as many tracks as you want with no file count cap, no duration limit, and no watermarks on your output.
Smooth Crossfade
Add 0–3 second crossfades between tracks for seamless transitions — perfect for mixtapes, compilations, and DJ sets.
All Major Formats
Import MP3, WAV, FLAC, OGG, and M4A. The tool handles sample-rate conversion automatically and exports lossless WAV.
How to Merge Audio Files Online
Combining multiple audio files is straightforward with RemoveVocals's Audio Joiner. Upload two or more audio files in any supported format — MP3, WAV, FLAC, OGG, or M4A — and arrange them in your preferred order using drag and drop. This audio merger automatically handles format conversion and sample rate matching while allowing you to merge mp3 files and other audio formats seamlessly.
You can reorder tracks, adjust crossfade settings between clips, and preview the merged result before downloading. Trim clips before merging for perfect timing, match pitch between clips for harmonic consistency, or sync tempo before joining to ensure rhythmic alignment. This online audio merger and audio concatenation tool make combining audio tracks and concatenate audio operations easy. Whether you're creating a mixtape, combining podcast segments, assembling a compilation, or joining split recordings, the process takes just seconds and runs entirely in your browser.
All processing happens locally on your device — no files are uploaded to any server. Your merged audio is exported in high-quality WAV format, preserving the full fidelity of your source files. There are no file count limits, no duration restrictions, and no watermarks added to your output.
Frequently Asked Questions
How do I merge audio files online?
Upload multiple audio files to RemoveVocals's audio joiner. Drag to reorder tracks in the desired sequence. Set crossfade duration if desired, then click Join to merge them into a single audio file. The entire process runs in your browser — nothing is uploaded.
Can I reorder audio files before merging?
Yes. Simply drag and drop tracks into the order you want. You can also remove individual tracks or add more files at any time before clicking Join.
What is crossfade and how does it work?
Crossfade creates a smooth transition between tracks by overlapping the end of one clip with the beginning of the next. You can set a crossfade duration from 0 to 3 seconds — ideal for creating mixtapes or seamless compilations.
What audio formats are supported?
You can merge MP3, WAV, OGG, FLAC, and M4A files in any combination. The tool automatically handles format conversion and sample-rate matching. The final merged file downloads as high-quality WAV.
Is there a file size or duration limit?
No. You can merge as many files as your device's memory allows, with no duration cap and no maximum file size. There are no watermarks added to the output.
Is it really free with no signup?
Yes, 100% free with no account required. There's no trial period, no premium tier for basic merging, and no hidden charges. All processing happens locally in your browser.
Can I merge audio files on my phone?
Yes. RemoveVocals's audio joiner works on any modern mobile browser (Chrome, Safari, Firefox). Upload files, reorder, set crossfade, and download — the same features available on desktop.
Are my files uploaded to a server?
No. Merging happens locally in your browser using the Web Audio API. Your audio never leaves your device, nothing is stored on our servers, and no account is required.
Can I mix different audio formats in one merge?
Yes. You can drop an MP3, a FLAC and a WAV into the same batch — the joiner automatically decodes each file and matches sample rates before merging. The output is always a single high-quality WAV.
How do I make a DJ mixtape or continuous mix?
Upload your tracks in play order, set a 2-3 second crossfade for smooth transitions, and export. For beat-matched transitions, use our BPM Finder and Pitch Changer tools first to align tempos.
Can I use merged audio commercially?
You can use merged output from tracks you own or have the rights to. For copyrighted songs, you are responsible for clearing rights — same rules as any audio editor.
Key Takeaways
- Merge unlimited tracks in any format (MP3, WAV, FLAC, OGG, M4A) with automatic sample-rate matching.
- Drag-and-drop reordering with real-time preview of the final arrangement.
- Crossfade from 0 to 3 seconds per transition — perfect for mixtapes and continuous mixes.
- Everything runs locally via the Web Audio API. Your files never leave your device.
- For beat-matched DJ transitions, pair with our BPM Finder and Pitch Changer.