Audio Joiner Online
Merge multiple MP3, WAV, M4A, or any audio files into one combined file. Upload, reorder, and download the joined MP3 — no sign-up, no upload, no watermark.
100% in your browser — nothing uploaded. Reorder with the up/down arrows.
How to Join Audio Files in 3 Steps
No account. No upload. Just drop your files and merge.
Upload Files
Drag and drop multiple audio files onto the joiner or click to browse. Add more any time — they append to the list.
Reorder If Needed
Use the up and down arrows to arrange files in the order they should play. Remove any you do not want.
Download Merged MP3
Hit Join & Download MP3. The combined file is encoded at 192 kbps and lands on your device instantly.
Why Notevibes Audio Joiner
Built for speed, privacy, and simplicity.
Any Audio Format
Merge MP3, WAV, M4A, FLAC, OGG, WebM, and AAC files in the same join. Output is always a single MP3.
Reorder Files
Arrange tracks in the exact order you want with up and down arrows. Swap adjacent files until the sequence is right.
Privacy First
Nothing is uploaded to a server. Your audio is merged locally in your browser and stays on your device.
No Upload Wait
Files stay in memory — no slow upload, no progress bar. Joining starts the moment you click the button.
Instant Download
Download the merged MP3 at 192 kbps. No watermark, no ads, no sign-up, no quality loss.
Works on Mobile
Join audio on your phone or tablet. Works on iOS, Android, and every major browser.
Your Files Stay on Your Device
Every merge is processed locally in your browser using the Web Audio API. Nothing is uploaded, stored, or analyzed.
No Upload
Audio never leaves your device
No Account
Start joining immediately
No Tracking
We never see your files
What You Can Do With a Quick Audio Join
Most merges take less than a minute.
Podcast Chapters
Stitch intro, segments, and outro into one final episode
Audiobook Segments
Combine chapter recordings into a single continuous audiobook
Song Medley
Merge multiple tracks into one seamless medley or mixtape
Voice Memos
Join several voice memos into one continuous recording
Interview Recordings
Combine multi-part interviews into one delivery file
Lecture Combine
Merge lecture sections into one downloadable study file
Need More Control?
The full Notevibes Online Audio Editor lets you trim, fade, mix multiple tracks, remove vocals, record voice, and export to MP3 or WAV — all in your browser.
Try the Full Audio EditorRelated Audio Tools
More free browser audio tools from Notevibes — no sign-up, no upload.
Frequently Asked Questions
How do I merge MP3 files online?
Drop your audio files onto the joiner above, reorder them with the up and down arrows if needed, then click Join & Download MP3. The merged file downloads to your device — no upload, no sign-up.
Can I merge different audio formats together?
Yes. You can mix MP3, WAV, M4A, FLAC, OGG, WebM, and AAC files in the same join. The browser decodes each file and the output is always a single MP3 at 192 kbps.
Is there a limit on how many files I can join?
No hard limit. The joiner handles as many files as your browser memory allows. On desktop you can easily merge dozens of files. On mobile, watch memory for very large batches.
How large can each file be?
Each file can be up to 200MB. Files larger than 100MB show a warning because joining may take longer on slower devices, but they still work.
Can I reorder the files before joining?
Yes. Each file row has up and down arrow buttons that swap it with the adjacent file. Arrange the list in the order you want them to play, then hit Join.
Is my audio uploaded to a server?
No. The joiner runs entirely in your browser using the Web Audio API. Your files never leave your device — nothing is uploaded, stored, or analyzed.
What is the output format and quality?
The merged file is always a single MP3 encoded at 192 kbps. No watermark, no ads, and no quality loss beyond standard MP3 compression.
Is the audio joiner free?
Yes. Completely free with no sign-up, no credit card, no watermark, and no limits on how many files you join or how often you use it.