What do I get as output — two files or one?

Two separate mono files, one for the left channel and one for the right.

Why would left and right channels ever contain different content?

Some recordings, effects, or dual-mono setups (like two separate microphones panned hard left and right) put genuinely different audio on each side, which is exactly the case this tool is useful for isolating.

Does this work on a file that's already mono?

A mono file has only one channel to begin with, so there's nothing to split — this tool is specifically for stereo source files.

Does Audio Channel Splitter upload my files to a server?

No. Audio Channel Splitter runs entirely in your browser using on-device processing, your files never leave your device.

Audio Channel Splitter

Split a stereo audio file into separate left and right mono channel files.

Runs in your browser

Drop a stereo audio file here

Choose File

About this tool

A stereo file's left and right channels are combined into one file by default, but some audio work — isolating a channel that has different content, working with dual-mono recordings, or troubleshooting a channel-specific issue — needs those channels as separate, individual files. This tool splits a stereo file into its separate left and right channels as individual mono files, giving you direct access to each channel on its own.

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