Audio Joiner: Merge MP3 Files Online
Join songs and recordings into one file.
Put several files in order, add a crossfade, download one MP3 or WAV. Free, nothing uploaded.
Start your music career · Pro for $1
Release on Spotify & Apple Music and earn from your streams. Commercial license, royalty-free.
This tool is free. Your own songs are $1.
Pro writes 5 brand-new songs from your words, music and vocals, in your first month for $1. Release them on Spotify, YouTube, TikTok and more, and your earnings stay yours. Cancel anytime.
No track to work on? Make one from scratch.
Type an idea or your own lyrics and SongUp AI composes the whole song — music and vocals. Your first one is free.
Create music with SongUp AI. Publish it everywhere. Earn from your streams.
How it works
Add the files
Choose several at once, or add more later.
Order them
Use the up and down arrows.
Join and download
Set a crossfade if you want, press Join and save the file.
About the Audio Joiner: Merge MP3 Files Online
Completely free: free account, no credits, no limit. It runs in your browser, so your audio stays on your device.
The Audio Joiner puts several files end to end in the order you choose and saves them as one MP3 or WAV. Add a crossfade of up to 8 seconds for a smooth, DJ-style handover between songs, or leave it at none for recordings that should follow straight on.
Files with different sample rates are matched automatically. Everything happens in your browser.
What you can use it for
- ✓A workout or party mix in one file
- ✓Join parts of a long recording
- ✓Combine voice notes into one message
- ✓Put an intro in front of a podcast episode
Step-by-step guide: How to Join MP3 Files Into One (Free, Online)
Frequently asked questions
How many files can I join?
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As many as your device’s memory allows; a typical laptop handles an hour or more of audio.
Can I mix two songs over each other?
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The joiner plays files one after another. To blend two songs together, use the free Mashup Creator.
What do I get?
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An MP3 (192 kbps) or a WAV file, whichever you choose, ready to download straight away.
Is it really free?
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Yes. It is completely free, with a free account: no limit and no watermark. It runs in your browser, so your audio stays on your device.