Audio Joiner Online
Merge multiple MP3, WAV, M4A, or any audio files into one combined track right in your browser. Drop files, reorder, download the joined MP3 — no sign-up, and your files are never uploaded.
100% in your browser — nothing uploaded. Reorder with the up/down arrows.
How to Join Audio Files
No account, no upload — three steps on your own device.
Drop Your Files
Add multiple MP3, WAV, M4A, FLAC, OGG, AAC, or WebM files, up to 200 MB each. Drop more any time — they append to the list.
Reorder the List
Use the up and down arrows to set the play order, and remove any file you don't want. File 1 plays first.
Join & Download
Hit Join & Download MP3. The files merge end-to-end into a single MP3 that saves straight to your device.
Why Notevibes Audio Joiner
Merge sites make you upload every file first. This one doesn’t.
Mix Any Formats
Merge MP3, WAV, M4A, FLAC, OGG, AAC, and WebM files in the same join. Whatever goes in, the output is always a single clean MP3.
Reorder in Place
Arrange tracks in the exact order you want with up and down arrows. Swap adjacent files until the sequence plays right.
Never Uploaded
Files are decoded and merged in your browser and stay on your device. Nothing is uploaded, stored, or tracked.
No Upload Wait
Files stay in memory — no slow upload, no progress bar. Joining starts the instant you click the button.
Pick Your Bitrate
Export the merged file at anything from 64 to 320 kbps. Keep it small for sharing or clean for music — your call.
Free, On Any Device
No watermark, no sign-up, no daily limit. Works on iOS, Android, and every major desktop browser.
Nothing to Upload, Nothing at Risk
Every merge is computed on your own device. Your files never touch a server — a stronger promise than any deletion policy.
No Upload
Decoding and merging run on your device
No Account
Start joining immediately
No Tracking
We never see your files
What People Join
Most merges take less than a minute, however many files.
Podcast Chapters
Stitch intro, segments, and outro into one finished 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
Merge Files Without the Upload
Combining a handful of recordings into one file usually means uploading every clip to some site, waiting on a queue, and hoping the order comes out right. Here the files never leave the tab. Drop them in, drag them into the order you want, and your browser stitches them end-to-end into a single MP3 the moment you click Join.
An audio merger and MP3 combiner in one
Whether you call it an audio joiner, an audio merger, or an MP3 combiner, the job is the same: take several files and combine them into one. Merge MP3 files into a single track, stitch voice recordings together end-to-end, or line up songs back-to-back into one long file — and since formats can be mixed in the same join, the pieces don’t even have to match.
Any mix of formats, one clean result
You don’t have to convert first: MP3, WAV, M4A, FLAC, OGG, AAC, and WebM can all go into the same join. Each file is decoded in your browser and written back out as one continuous MP3 — no gaps, no format mismatch, no re-encoding surprises.
Order you can see and change
The file list is the running order. Move any row up or down with the arrows, drop a file you didn’t mean to add, and the total length updates as you go. When it looks right, one click merges everything at the bitrate you pick, from 64 to 320 kbps.
Private because it never leaves
Interview tape, chapter recordings, personal voice memos — these are exactly the files you don’t want on someone else’s server. The join happens entirely on your device, so there’s no upload time and nothing to gate behind a sign-up. It’s free with no watermark and no daily cap.
When you need the opposite, or more
Need to divide a file instead of combine? The audio splitter cuts one file into equal parts. Trimming the ends first? Use the audio trimmer, and the audio converter changes formats the same no-upload way. For crossfades, mixing, and AI cleanup, open the online audio editor.
Need to Do More Than Join?
The full Notevibes editor trims, splits, crossfades, mixes tracks, and applies AI tools to your audio — then exports to MP3 or WAV.
Free to try · No credit card required
Related Audio Tools
More free AI audio tools from Notevibes — same engine, no sign-up.
Audio Joiner FAQ
How do I merge audio files online?
Drop your files onto the joiner above, reorder them with the up and down arrows if needed, then click Join & Download MP3. The merged file saves to your device — no upload, no sign-up.
Can I merge different audio formats together?
Yes. Mix MP3, WAV, M4A, FLAC, OGG, AAC, and WebM files in the same join. Each one is decoded in your browser and the output is always a single MP3.
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 — dozens on desktop with ease. On mobile, keep very large batches reasonable.
How large can each file be?
Up to 200 MB per file. Files over 100 MB show a warning because joining may be slower on some devices, but they still work.
Can I reorder the files before joining?
Yes. Each row has up and down arrows that swap it with the neighboring file. Arrange the list in play order, 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 a single MP3 at the bitrate you choose (64–320 kbps, 192 by default). No watermark, no ads, no quality loss beyond standard MP3 compression.
Can I mix two songs together?
This tool joins tracks end-to-end — the first song finishes, then the next one starts. To layer two songs so they play at the same time, or blend them with a DJ-style crossfade, open the online audio editor, which mixes tracks on separate lanes.
Can I cut and join in the same place?
Joining happens here. If a clip needs cutting first, trim it with the MP3 cutter or audio trimmer, then come back and drop the pieces into the joiner — together they cover the full cut-and-join workflow.
Is the audio joiner free?
Completely. No sign-up, no credit card, no watermark, and no limit on how many files you join or how often you use it.