Audiobook Listeners
Join chapter files, up to an hour at a time, into one track that plays straight through in any player.
Audio Joiner: Combine Audio Files Into One Track Online
Add two songs, a dozen voice notes or a whole folder of chapters and this free audio joiner merges them into one file in your browser. Drag to reorder, trim each clip, blend them with a crossfade or a short gap and download a single MP3 or WAV. No sign-in, nothing uploaded.
Free, No Sign-inFiles Stay on Your DeviceCrossfade Between ClipsOne MP3 or WAV
Add audio files to join into one
Supported formats: MP3, WAV, M4A, AAC, FLAC, OGG, OPUS, MP4, MOV, WEBM, up to 500 MB each, 30 files and 60 minutes in total
or drag and drop audio or video here
- Runs in your browser, nothing is uploaded
- Free, no sign-in
- Crossfade and loudness match
More Tools
Why You Need an Audio Joiner Instead of a Full Editor
Recordings rarely come in one piece. A phone splits a long talk into parts, an audiobook arrives as forty chapters, a podcast has a separate intro and outro, and a playlist for an event is twelve songs that should play without gaps. A full studio editor can do it, but placing every clip on a timeline by hand takes far longer than the job deserves. An audio merger built for this one task lets you drop the files in, put them in order and get one clean track back. These are the problems that bring people to an audio combiner.
- A recording split into several files by a phone or a recorder
- Audiobook chapters or lesson parts that should be one long file
- An intro, the main episode and an outro waiting to be stitched together
- Songs that need smooth transitions instead of hard stops
- Online tools that upload your files, limit you to two clips or add a watermark
What You Get With This Free MP3 Merger
An audio editor for multiple files that does one thing well: turn many clips into one.
Many Files at Once
Add up to 30 clips in one go, from two songs to a folder of chapters, in MP3, WAV, M4A, FLAC, OGG or video formats, up to an hour in total.
Drag to Reorder
Put the clips in the right order by dragging them or with the keyboard, and see the total length update instantly.
Trim Each Clip
Cut the silence from the start and end of every clip before it joins the rest, so the final track flows without dead air.
Crossfade or Gap
Blend one clip into the next with a crossfade of up to five seconds, leave a short gap of silence between chapters, or join them back to back.
Even Loudness
Match the loudness of every clip so a quiet voice note does not follow a loud song, and set the gain of any clip by hand.
Private and Free
The audio joiner runs on your own device. Nothing is uploaded, there is no account and no watermark, and it costs nothing.
How to Merge Audio Files in Three Steps
This is how to combine audio files on any computer or phone, and how to merge MP3 files into one file without installing anything.
- 1
Add your clips
Drag the files onto the box at the top of the page or click to pick them. Each clip appears as a card with its name, length and a small waveform.
- 2
Arrange and blend
Drag the cards into order, trim any clip, choose a crossfade or a gap between clips and switch on loudness matching if the levels differ.
- 3
Download one file
Preview the whole timeline, pick MP3 or WAV and download a single track that holds every clip in order.
Features of the EzTranscriber Audio Combiner
Everything you need to combine MP3 files into one, and nothing that slows you down.
Merge MP3, WAV and M4A Into One File
Mix formats freely: the audio joiner reads anything your browser can decode, including MP3, WAV, M4A, AAC, FLAC, OGG and the sound inside MP4 and MOV videos, and writes one MP3 or WAV. Merge two MP3 files for a quick mashup of takes, merge WAV files for a studio project, combine WAV files without losing quality by saving as WAV, or join WAV files that a field recorder split into parts. As an online MP3 joiner it handles the everyday job too: combine MP3 into one file, combine MP3s into one file for a drive, or merge audio files into one for an archive. It is an MP3 merge and MP3 combine tool in one.
Merge My FilesDrag to Reorder and Trim Every Clip
Clips appear as cards on a timeline. Drag them into order, move them with the keyboard, and open any card to trim its start and end or set its gain. The total length and the position of each clip update as you go, and you can preview the whole result before you export. If you only need to cut one file, the audio cutter is the quicker tool; together they work as an MP3 merger and cutter, or an MP3 joiner splitter, so a free MP3 cutter joiner pair covers every edit.
Arrange My ClipsCrossfades That Blend Songs Together
Wondering how to merge two songs together so the change is smooth? Set a crossfade of up to five seconds and the end of one song fades out while the next fades in. That is the easiest way to mix 2 songs together for a party playlist, a workout or a wedding entrance, and it answers how do I mix two songs together with a simple fade. The songs play one after the other with a smooth, equal power overlap; they are not layered on top of each other, and there is no beat matching. For speech, choose a short gap of silence instead so chapters stay distinct.
Add a CrossfadeEven Loudness Across Every Clip
Clips recorded on different days rarely share the same level. Every clip shows its loudness in LUFS, and turning on loudness matching brings them all to the same level before the sound merger joins them, so nobody has to reach for the volume between chapters. Fine tune any clip with its own volume control from -12 to +12 dB. For a final loudness target such as -16 LUFS for podcasts, run the merged file through the volume booster.
Match the LevelsAudio Joiner Example: Build a Timeline From Three Clips
Reorder the clips, pick a crossfade or a gap and see how long the merged track will be.
Podcast episode · 3 clips
Reorder, blend and check the merged length
MP3Intro jingle0:14
WAVInterview4:32
M4AOutro music0:26
Merged track
5:08
MP3 at 192 kbps
7.4 MB
Overlap saved
4.0 s
episode (3 clips).mp3The real tool merges your own files the same way.
This is exactly what the tool above does with your own files. A crossfade shortens the total length because neighbouring clips overlap; a gap adds a little silence between them. Either way you get one file, which is how to combine audio files into one without a timeline editor.
Online Audio Merger vs Desktop Editor vs Command Line
Three ways to combine multiple MP3 files. Here is how they compare.
| Online Audio Merger vs Desktop Editor vs Command Line | EzTranscriber audio joiner | Desktop audio editor | Command line tools |
|---|---|---|---|
| Nothing to install | |||
| Drag and drop ordering | |||
| Crossfades between clips | With extra flags | ||
| Loudness matching | Manual | With extra flags | |
| Files stay on your device | |||
| Time to first result | A minute | Ten minutes or more | Depends on skill |
Who Uses an MP3 Combiner
From audiobook listeners to DJs, people combine audio files to get one track that just plays.
Podcasters
Stitch the intro, the interview and the outro together, with a short gap or a soft crossfade between them.
Event Playlists
Merge a set of songs with crossfades for a party, a class or a wedding so the music never stops.
Teachers
Combine lesson parts into one file students can download, then make it searchable with voice memo to text.
Voice Notes
Join a string of voice notes into one recording, or record a new part with the online voice recorder.
Video Creators
Build one soundtrack from several clips, then pull audio from a video with extract audio from video.
What People Say About Our MP3 Merger
My recorder splits every lecture into 15 minute files. I drop the parts of a class in, hit download and get one file per lecture.
Aisha Rahman
Graduate Student
I made our wedding entrance track from three songs with two second crossfades. The transitions were so smooth that nobody noticed the joins.
Leo Martins
Groom
Twelve short audiobook chapters became one file in a couple of minutes, and the loudness matching fixed the one quiet chapter.
Grace Okafor
Audiobook Fan
Intro, episode, outro, done. I used to open a full editor every week just to do this.
Nathan Brooks
Podcast Host
Audio Joiner FAQs
Answers to the most common questions about merging audio and MP3 files.
What is an audio joiner?
An audio joiner takes several audio files and writes them into one track, in the order you choose. EzTranscriber does it in your browser with optional trims, crossfades, gaps and loudness matching.
How do I combine MP3 files into one file?
Add the files to the box above, drag them into order and download. That is how to combine MP3 files into one file, how to combine MP3 files together and how do I combine MP3 files on any device. It is also how to join MP3 files together without software.
How to merge multiple MP3 files into one?
Select all of them at once when you add files, check the order and press Download. The same steps cover how to merge several MP3 files into one, how to combine multiple MP3 files into one and how to merge MP3 files into one, for up to 30 clips and an hour of audio per export. You can join multiple MP3 files into one or combine multiple MP3 into one long track in a single pass.
How do you combine two songs together?
Add both songs, put them in order and choose a crossfade of two to five seconds so the first fades into the second. That is how to combine two songs together, how to merge two songs together and how do I merge two songs together smoothly. The songs play one after the other, not on top of each other.
How do you merge songs together for a playlist?
Add every song, set a short crossfade, switch on loudness matching and download one MP3. That is how to merge songs, how to join songs together, how to combine MP3 songs together and how to merge music for a party without gaps. It answers how do you merge two songs together too: merge songs together in any number, two or twenty.
How to merge audio files of different formats?
Just add them. The audio merger decodes MP3, WAV, M4A, FLAC, OGG and video audio in the browser and writes one MP3 or WAV, so you can combine audio files of any mix. This is also how to merge two sound files or how to combine two audio files recorded on different devices.
Is the audio joiner MP3 only?
No. It reads MP3, WAV, M4A, AAC, FLAC, OGG and the audio in MP4 or MOV files, and writes either an MP3 at the bitrate you pick or a lossless WAV.
How to combine WAV files into one without losing quality?
Add the WAV files and choose WAV as the output. Nothing is compressed, so the joined file sounds exactly like the originals.
Is this audio joiner free?
Yes. It is a free audio joiner with no account, no watermark and no daily limit, because your own device does the work.
Are my files uploaded?
No. Files are read and merged in your browser and the result is saved back to your device. Only if you press Transcribe is the merged file sent to the AI transcriber, after you sign in.
Can I add a gap of silence between clips?
Yes. Choose Gap instead of Crossfade and set how many seconds of silence go between clips. A short gap works well between audiobook chapters and lesson parts.
Can I combine audio with a video?
No. The audio joiner outputs audio only. It can read the sound from a video file and join it with other clips, but it does not put audio back onto a video.
Can I turn the merged audio into text?
Yes. Press Transcribe after merging to send the file to our audio to text converter. It needs a free account and uses credits.
More Free Audio Tools
Edit, convert and polish audio in your browser.
Combine Your Clips With the Free Audio Joiner
Add your files, put them in order and download one MP3 or WAV. The audio joiner is free, private and runs entirely in your browser.