Online Stereo to Mono Converter
Downmix stereo recordings into a balanced single-channel mono file, or extract individual left or right audio channels. Fast, browser-based processing with zero server uploads.
Upload or Drop Stereo Audio File
Downmix stereo tracks to balanced mono or extract left/right channels · 100% In-Browser
Why Convert Stereo Audio to Mono?
Fixing "One Ear Only" Audio
Dual-microphone interview recordings or faulty audio jacks frequently record voice into only the left headphone channel. Downmixing fixes this so speech plays centered in both ears.
Extracting 2-Track Interviews
Many broadcast recorders put the host on the Left channel and the guest on the Right channel. You can extract each person into their own dedicated isolated mono track.
Club & Smart Speaker Systems
Retail store PA speakers, single smart speakers (like Amazon Echo or Google Nest), and venue sound systems run in mono. Converting ensures your music sounds balanced without stereo panning loss.
Frequently Asked Questions
What is the difference between Balanced Sum and Channel Extraction?
Balanced Sum adds the left and right waveforms together and divides by 2 so overall loudness is preserved without clipping. Channel extraction completely ignores one side and keeps 100% of the other side.
Does converting to mono cut file size?
Yes! Mono audio has exactly half the channel data of stereo audio. When exporting to uncompressed WAV or bitrate-scaled MP3, mono files take up 50% less bandwidth and disk storage.
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