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utility
Stereo & Mono Converter
Convert between stereo and mono, or widen the stereo field. Free, private, runs in your browser.
How it works
01
Drop your audio file or click to upload. The tool detects whether it's mono or stereo.
02
Choose a mode: To Mono (average L+R), To Stereo (duplicate mono), or Widen (adjust stereo width).
03
Preview the result and download as WAV.
No file uploadNo signupNo ads100% browser-based
Frequently asked questions
How do I convert stereo audio to mono?
Upload your stereo audio file and select To Mono mode. The tool averages the left and right channels into a single mono channel. Download the result as WAV.
How do I convert mono audio to stereo?
Upload your mono audio file and select To Stereo mode. The tool duplicates the mono channel to both left and right, creating a stereo file. The sound will be centered.
What is stereo widening?
Stereo widening uses mid-side processing to enhance the stereo field. Width at 100% is the original. Below 100% narrows toward mono. Above 100% exaggerates the stereo separation for a wider, more spacious sound.
When should I convert to mono?
Convert to mono when your audio will be played through a single speaker, when you want to reduce file size, or when you need compatibility with mono playback systems like PA speakers or phone calls.
Does this upload my audio to a server?
No. All processing happens locally in your browser. Your file never leaves your device.
Is this converter free?
Completely free. No account, no limits, no watermarks.
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Orec is a free browser-based recorder with crash-safe local storage and built-in editing.
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