Mono to Stereo
Expand mono audio to a stereo field for wider playback.
Drag & Drop your audio file (MP3, WAV, etc.)
or click to browse
summer_mix.mp3
Sample file
podcast_intro.wav
Sample file
Why use Mono to Stereo?
Expand mono audio to a stereo field for wider playback.
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.
Precise control
Shape your sound with clear controls and immediate feedback so every adjustment is easy to hear.
Mobile friendly
Use Mono to Stereo on any device (phone, tablet, or desktop) without installing an app.
How to use Mono to Stereo
Expand mono audio to a stereo field for wider playback. Follow these steps to get started.
1. Upload your audio
Add a file from your device or drag and drop it into the upload zone.
2. Adjust settings
Use the controls in the workspace to change speed, EQ, volume, stereo width, or other options for this tool.
3. Download
Save the processed file to your device when you are happy with the result.
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
"I’ve tried similar sites; Mono to Stereo stands out because it’s responsive and doesn’t nickel-and-dime you."
Chris Walsh
Radio Host
"Mono to Stereo integrated smoothly into how I prep voiceovers for video."
Chris Müller
Radio Host
"I use Mono to Stereo on my phone more than I expected. The layout actually works on a small screen."
Sofia Okonkwo
Podcast Creator