Convertly

Convert an audio file to mono or stereo

Convert a recording to mono to make it half the size, or duplicate a mono sound across two channels so it plays through both speakers.
  1. 1Import
  2. 2Adjust
  3. 3Download

Drag and drop your audio files here

or click to select them from your device · 100% processed in your browser

Why use "Mono or stereo"?

FastGet your result in seconds, with nothing to install.
PrivateYour audio files stay on your device: nothing is sent to a server.
FreeNo sign-up, no watermark.