Stereo to Mono
Downmix a stereo track to a single mono channel.
Your files are processed locally in your browser and never uploaded.
How it works
- 1Choose a file or drop it onto the box.
- 2Set the options you want.
- 3Click the button — the result downloads automatically.
About this tool
Stereo to Mono: Downmix a stereo track to a single mono channel. Choose a file, adjust the options and download the result — the processing runs entirely in your browser, so your file is never uploaded to a server. No sign-up, no watermark.
How do I use the Stereo to Mono?
Choose a file or drop it onto the box. Set the options you want. Click the button — the result downloads automatically.
Is the Stereo to Mono free?
Yes. It is completely free with no sign-up, no usage limits and no watermark.
Are my files uploaded?
No. The file is processed entirely in your browser using WebAssembly and web APIs — it never leaves your device, which also makes it work offline once the page is loaded.
Does it work on my phone?
Yes. It works in any modern browser on Android, iPhone, iPad, Windows, Mac and Linux — no app needed.