Audio joiner merge MP3 files, free
Drop in two or more files, put them in the right order, and get one MP3 back. Free, no account, nothing installed.
By Sam Ridder · Last updated: October 2026
No account. No watermark. Free for up to 120 MB and 60 minutes of audio in total across all files; both limits apply.
It works the same in a phone browser as on a desktop: up to 10 files joined gapless, nothing installed, and no cut-down mobile version. As an audio joiner online free of accounts and watermarks, it treats everyone the same: there is no separate paid joiner, and so the MP3 joiner free tier is the full tool.
One audio combiner for every format
A voice memo from a phone, a WAV from a recorder and a downloaded MP3 have different sample rates and channel counts: that's what trips up a typical MP3 combiner and produces a chipmunk noise halfway through. Everything here is converted to the same format first, so the join is seamless whatever you feed it. Think of it as an audio file combiner that handles the format headache for you, not just a joiner that assumes everything already matches.
- Combine MP3 files (or WAV, M4A, FLAC, OGG and video): up to 10 at a time, any order you like
- MP3, WAV, M4A, FLAC, OGG and video files can be mixed freely
- One MP3 back from the audio merge, gapless: the pieces run straight into each other
- All uploads are deleted the moment the result comes back
How to merge audio files
Merge, combine or join audio online right here. Drop the files in, order them, and press Join.
- Drop your files in the box above, or pick several at once.
- Use the arrows to put them in the order you want them played.
- Press Join them and wait a few seconds.
- Play it back and download the MP3.
The same steps cover how to merge songs, two or ten: drop the files in, order them, press Join. To merge MP3 files into one, or join MP3 tracks from different sources, there's nothing extra to set, and a WAV, M4A, FLAC, OGG or video file joins the same way. The total can be up to about 120 MB or an hour of audio on the free tier. You can join audio files recorded on different devices, because everything is converted to the same format before joining.
Trim first, then join
Recordings almost always start with a few seconds of shuffling and end with someone reaching for the stop button. Run each piece through the audio cutter first and the join comes out clean, without a pause where the seam is. Doing an interview or a podcast, in parts? Cut each part's ends, join them here, and if the room had a steady hum or hiss under the voices, CleanGrab's hum and hiss remover takes it off afterwards. The online MP3 cutter and this joiner are two separate free tools, not one combined editor, but a file moves between them as a plain MP3 download. For things recorded in parts, such as a lecture split across three files or voice memos from one interview, an online MP3 joiner saves you opening an editor.
Related: Cut a Piece Out of Any Audio File: Free MP3 Cutter, No Signup.
From a video, or coming from another tool
It also works as an audio video merger online in one sense: drop a video (MP4, MOV and similar) in alongside your audio files and its soundtrack is pulled out and joined like any other clip. It isn't a video merger, though; what comes back is always audio. If you've used the Kapwing or Clideo audio joiner before, the flow is the same broad idea. Pick files, set the order, download, and here it needs no account and no subscription.
What this is not
This puts files after each other. It does not lay them over each other: no mixing a voice on top of a backing track, and no crossfade between the pieces. That's a job for a multitrack editor like Audacity. It also isn't a DJ tool: there's no beatmatching, just files back to back. What we do have on the other side is the opposite operation: the stem splitter takes one finished song apart into vocals, drums, bass and the rest.
It re-encodes the joined result to a single MP3, which keeps the whole file consistent. For most voice and music that's inaudible; if you need a lossless join, use a desktop editor.
Common questions
How do I merge MP3 files together online?
Add the files in the order you want, press Join, and download one combined MP3: no software, no account. When every file is already an MP3, it works as a plain MP3 joiner. To merge audio online from a phone works the same way.
Is the audio joiner free?
Yes. This online audio joiner needs no account, no e-mail, no watermark and no daily limit. A pass only raises the size and length limits, not the quality.
Can I merge audio in different formats?
Yes. You can combine audio files in MP3, WAV, M4A, FLAC, OGG and video in one go: everything is converted to match before joining, so as an audio merger or audio file joiner it takes more than just MP3. Any audio file merge works the same way.
Can I mix MP3 and WAV in one join?
Yes. Everything is brought to the same sample rate and channel layout first, which is exactly what stops the pitch or speed jumping at the seam. Even a WAV joiner job with odd sample rates comes out matched.
Is there a free MP3 joiner online without a watermark?
Yes. There is no account, no e-mail and no watermark. The free tier takes up to 10 files, 120 MB and an hour of audio in total, and the pieces run into each other without a gap.
Can I join MP3 online on my phone?
Yes. Open the page in your phone's browser, pick the files, order them with the arrows and press Join. Nothing needs installing, and the finished MP3 downloads to the phone.
Is it safe to use an MP3 joiner online?
Your files do travel to a server for processing, but they are deleted the moment the joined file has been sent back, and nothing is shared or used to train anything.
How many files can I join?
Up to ten in one go, and up to about 120 MB and an hour of audio in total. Need more, for example an audiobook with many chapters? Join ten, then join the result with the rest.
How do I set the order?
Use the up and down arrows next to each file before pressing Join; the sequence on screen is exactly the order in the final file. You can pick files one at a time or several at once.
Is there a gap between the files?
No: they run straight into each other. If you want a pause, trim the pieces so one has a moment of silence at the end.
Can it fade one into the next?
No. This is a plain join; crossfading is editor work, not a one-click job.
Does the result keep the original quality?
It comes back as one MP3 audio file, re-encoded so the whole thing is consistent. As an MP3 merger or file merger for audio it's fine for voice and most music; for a bit-perfect join of lossless files, use a desktop editor.
Does it work on a phone, or do I need software?
No software. This audio online joiner runs in Chrome, Edge, Firefox or Safari on Windows, Mac or Android, and the processing runs on our own server; the files are deleted as soon as the result has been sent back.
Is my upload stored?
No. Your uploads are deleted the moment the joined file has been sent back. Nothing is shared or used to train anything. See privacy.
Can I trim the files before joining them?
Not on this page: the online MP3 cutter and this joiner are two separate free tools, not one combined editor. Run each piece through the audio cutter first, then join the results here, and the join comes out clean, without a pause where the seam is.
How do I merge audio files online?
Open StemGrab's audio joiner, drop in your files, arrange them in the right order, and press Join them. You get a single seamless MP3 back, free, no account needed.
Is this an audio file merger too, not just a joiner?
Yes: audio file merger and audio joiner both describe the same tool here: pick your files, set the order, and download one MP3.
How is this different from the Clideo audio joiner?
This isn't Clideo, but the job is close: search Clideo audio merger and you'll find a similar drop-and-join flow elsewhere. Clideo merge audio works the same broad way too. Look up Clideo mp3 merger and the routine repeats. A Clideo mp3 joiner usually asks for an account or a paywall after a few files; this page doesn't. Clideo merge mp3 still just means picking files, setting the order and downloading, free throughout.
Do I need an app for joining songs, or can I do it online?
No installs: skip the app for joining songs and do it right here in the browser: drop files in, arrange them, and download the merged MP3.
Is this an audio joiner and cutter pair, or two different accounts to juggle?
One pair, no separate accounts: the same no-sign-up rule applies on both pages, and a file moves between them as a plain MP3.
Does an audiobook joiner work the same as joining songs?
Yes. Drop in the audiobook chapters in listening order and download one combined MP3, the same as joining any other audio files.
Does an audio joiner dj use case need beatmatching, or just files back to back?
Just files back to back: this joins tracks in the order you set with no beatmatching or crossfade, which is a mixing job for DJ software, not this page.
Is there an audio joiner for video files, not just plain audio?
Yes. Drop an MP4, MOV or similar video in alongside your audio files and it joins the same way, with the video's own soundtrack pulled out and merged like any other clip.
Does an audio joiner for pc need installing, or does it run in the browser?
Nothing to install: Chrome, Edge, Firefox or Safari on Windows or Mac all run it the same way.
Is there an audio joiner android version, or only a desktop one?
Same page, same tool. Open it in Chrome on Android and it works exactly like the desktop version, nothing to install.
Is this an audio joiner editor online with more tools than just placing files back to back?
No: this audio joiner editor online does one job: set the order and join, with no timeline, crossfade or mixing controls to learn.