Convert stereo to mono

Mix both channels into one, for voice recordings, phone systems and smaller files.

Drop audio files to make them monoor paste with ⌘V. Your files stay on your device.
MP4MOVWebMMKVAVI
  1. 1Drop audio files.
  2. 2They're mixed to one channel.
  3. 3Download.
Does my audio leave my device?
No. Your audio is processed in your browser, on your device, so even long recordings start right away.
Is there a size limit?
No limits from us. Recordings of several hours need more memory and time; phones manage shorter files best.
Does it work offline?
Yes. Once the page and the audio engine have loaded, it keeps working without an internet connection.

Related tasks

Ready-made settings for common jobs.

Other tools

More ways to work with audio.