Audio
Stereo / Mono Converter
Downmix stereo to mono or split channels, locally.
Runs entirely in your browser. Nothing is uploaded.
How to use
- Drop in a WAV, MP3 or M4A file.
- Choose to downmix to mono, split the channels, or make dual-mono stereo.
- Download the result as a 16-bit WAV.
Examples
- Downmix a stereo recording to a single mono track for a voiceover.
- Split a stereo file into separate left and right WAVs.
- Turn a mono source into a dual-mono stereo file for a stereo timeline.
Frequently asked questions
What format is the output?
Uncompressed 16-bit WAV, which imports cleanly into any editor. The sample rate matches your source.
Is my audio uploaded?
No. The file is decoded and re-encoded in your browser and nothing is uploaded.
Does downmixing lose quality?
Downmix sums the channels, which can change the balance of stereo material, but for speech and most sources it is clean and transparent.
