Audio Joiner

Join MP3, WAV, M4A and other audio files into one with MiniWebtool’s Audio Joiner. Put them in order, trim each track, add a crossfade or a pause, make them equally loud and save one MP3 or WAV.

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Help me understand MiniWebtool's Audio Joiner: https://miniwebtool.com/audio-joiner/. What can I use it for, what inputs or settings do I need, and how do I use it and understand the output? Walk me through one simple example. Use this page as your source and answer in English.

3 free uses dailyNo sign-up requiredUpdated Oct 2026

Audio JoinerTry it now — free ▼

Put several audio files together into one

Add your files, put them in order, pick a crossfade or a pause, and download one MP3 or WAV.

🎵➕🎵

Drop your audio files here MP3, WAV, M4A, OGG, OPUS, FLAC, or a video (its sound is used). Add as many as you like.
Add Audio Files

🔒 Joined on your device. Nothing is uploaded.

How the tracks join

🔀 Crossfadeone fades into the next ⏸ Silence gapa short pause between ⏭ Direct joinback to back

Crossfade length 3.0 s

0 sspeech 0.5–1 smusic 2–4 s12 s

Crossfade curve

Even: the volume stays steady through the blend.

Make all tracks equally loudRaises quiet recordings and lowers loud ones, so nobody has to touch the volume at a join. Remove silence at the start and end of each fileThe next track starts right where the sound of the last one ends. Fade in at the start and fade out at the endTwo seconds each way, so the music does not start or stop suddenly.

Save as

Add at least two files.

Embed Audio Joiner Widget

About Audio Joiner

This audio joiner puts several audio files together into one. Drop in MP3, WAV, M4A, OGG, OPUS or FLAC files, or the sound of a video, put them in order and choose how they meet: a smooth crossfade, a short pause or straight back to back. You can use only part of a song, make quiet recordings as loud as the rest, and listen to the whole result before you save one MP3 or WAV. Everything happens in your browser; your files are not uploaded.

At a Glance

Audio Joiner puts several MP3, WAV, M4A, OGG, OPUS or FLAC files together into one, with a crossfade, a pause or a direct join, and saves one MP3 or WAV.

Audio Joiner: features at a glance
Feature	What you get	Good for
Files	MP3, WAV, M4A, OGG, OPUS and FLAC in one list, plus the sound of a video; as many as your device can hold.	Songs, voice messages, chapters
Order and trim	Drag to reorder or sort by name; use only part of any track by typing its start and end.	Dance and cheer mixes, removing intros
Joins	Crossfade (with speech, dance and music presets), a silence gap, or straight back to back.	Smooth playlists or clean speech
Volume	Makes quiet and loud recordings equally loud, removes silence at the edges and can fade in and out.	Podcasts and recordings from different phones
Check before saving	Total length shown as you change settings, and the whole result plays on the page.	Routines that must fit a time limit
Save	MP3 (three quality levels) or WAV, plus chapter times to copy into a description.	YouTube, podcasts, audiobooks

How to Use the Audio Joiner

Add your files. Drop two or more audio files onto the page, or press Try it with sample clips to see how it works first.
Put them in order. Drag a track by its number, use the arrows, or press Sort A → Z for numbered files such as chapters and voice messages.
Trim if you need to. Press ✂ on a track and type where it should start and end. Only that part is used.
Choose the join. Crossfade for music, a silence gap for speech, or a direct join. The timeline shows the total length as you change it.
Join and save. Press Join Audio, listen, then download the MP3 or WAV. Copy the chapter times if you are posting it as a video or podcast.

What People Join

💃 Dance, cheer and workout mixesTake the part you need from each song, crossfade them, and fade out at the end. The total length is shown before you save, so a routine that must last 2:30 does.

🎙 Podcasts and videosIntro music, the episode and the outro in one file, all at the same loudness, with chapter times ready for the description.

💬 Voice messages and recordingsVoice notes, phone recordings or a lecture saved in parts become one file you can share, keep or turn into text.

📚 Audiobooks and lessonsDozens of chapter files sorted by name and joined into one long file with a chapter list.

🎶 Playlists and ringtonesTwo favourite songs blended into one, or a short mix for a party, a slideshow or a phone ringtone.

Which Join to Choose

You are joining	Choose	Why
Songs for a mix or playlist	Crossfade, 2–4 s	One song fades into the next with no silence and no sudden cut
Dance or cheer routine music	Crossfade, 1–2 s, plus fade out at the end	Quick changes that still sound smooth; the music does not stop abruptly
Intro, episode and outro	Crossfade, 0.5–1 s	The music slides under the first words instead of stopping before them
Voice messages or lecture parts	Silence gap, 0.5–1 s	A short pause keeps sentences from running into each other
One recording split into pieces	Direct join, silence trimming off	Puts the parts back exactly as they were recorded

With a crossfade, each join overlaps the two tracks, so the result is shorter than the files added together: three 3-minute songs with a 4-second crossfade last 8:52, not 9:00.

Frequently Asked Questions

How do I join two MP3 files into one?

Drop both MP3 files onto the page, check that they are in the right order, choose Direct join or a short crossfade and press Join Audio. Listen to the result, then press Download MP3.

Can I join files in different formats?

Yes. You can mix MP3, WAV, M4A, OGG, OPUS and FLAC in one list, and use the sound of an MP4 or WEBM video. The result is one MP3 or WAV file.

How do I use only part of a song?

Press the scissors button on the track and type where it should start and end, for example 0:45 to 2:10. Only that part is joined. This is how dance and cheer mixes are made from several songs.

How long should a crossfade be?

Two to four seconds sounds smooth for music. For speech, use half a second to one second, or a short silence gap instead. Choose Direct join to put the files back to back with nothing in between.

Why is the joined file shorter than all the files added together?

During a crossfade the end of one track plays over the start of the next, so each join takes away the crossfade length. Silence that is removed from the start and end of each file also shortens the total. The timeline shows the exact length before you join.

One of my recordings is much quieter. Can I fix that?

Turn on Make all tracks equally loud. Quiet tracks are raised and loud ones lowered before they are joined, so listeners do not have to change the volume at every join.

Can I join WhatsApp voice messages?

Yes. Save the voice messages from the chat (they are usually OPUS or M4A files), drop them onto the page, sort them by name and join them into one MP3. To turn the result into text, open it in Audio to Text.

Are my files uploaded?

No. The files are opened, joined and saved in your browser, and nothing is sent to a server. Very long files need enough free memory on your device.

Reference this content, page, or tool as:

"Audio Joiner" at https://MiniWebtool.com/audio-joiner/ from MiniWebtool, https://MiniWebtool.com/

by miniwebtool team. Updated: October 29, 2026

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