MP3 Joiner
Merge multiple audio files into one seamless track.
Drag & Drop your audio file (MP3, WAV, etc.)
or click to browse
summer_mix.mp3
Sample file
podcast_intro.wav
Sample file
Why use MP3 Joiner?
Merge multiple audio files into one seamless track.
Extremely Fast
Files are processed directly in your browser. No server upload means less waiting and lower bandwidth use.
100% Secure & Private
Your audio stays on your device. We use client-side technology so your content is not uploaded to our servers.
Built for editing
Trim, merge, record, or shape clips with a workflow tuned for creating and combining audio, all in one place.
Mobile friendly
Use MP3 Joiner on any device (phone, tablet, or desktop) without installing an app.
How to use MP3 Joiner
Merge multiple audio files into one seamless track. Follow these steps to get started.
1. Upload your audio
Choose files from your device or drag them into the upload area. Common formats like MP3, WAV, and M4A are supported.
2. Edit in the workspace
Use the waveform, selection handles, or merge list to trim, combine, or record exactly what you need.
3. Export
Download your result in your chosen format. Processing stays in your browser from start to finish.
All Audio Tools
Discover our full suite of premium online audio editors.
MP3 Cutter
Trim and cut MP3 and other audio files precisely in your browser.
Change Audio Speed
Speed up or slow down playback without changing pitch options.
Bass Booster
Boost low frequencies to add punch and warmth to your tracks.
Change Audio Volume
Normalize or change loudness of your audio files easily.
Stereo to Mono
Combine stereo channels into a single mono audio track.
Audio Equalizer
Shape tone with a multi-band equalizer for your audio.
Our User Reviews
"Compared to desktop trials, MP3 Joiner was faster for a one-off job. I'll be back."
Lucas Nguyen
Music Producer
"My podcast editor and I both use MP3 Joiner; we finally stopped emailing huge files around."
James Khan
DJ
"I was skeptical of browser audio tools until MP3 Joiner. It changed my mind."
Lucas Walsh
Filmmaker