Left and right, isolated

Audio Channel Splitter

Upload a stereo audio file and split it into separate left and right mono channels. Preview each one on its own, then download them as separate WAV files.

Audio file

Upload a stereo audio file to see its channels here.

How to use the audio channel splitter

Stereo audio is made of two independent channels, left and right. This free online tool reads both channels separately so you can inspect, preview and export each one on its own.

Upload your audioChoose a stereo file. It decodes in your browser and each channel's waveform is drawn separately.

Preview each sidePlay the left channel or the right channel on its own to hear exactly what is in it.

Download the channelsSave the left and right channels as two separate mono WAV files.

Why split audio into left and right channels?

Working with individual channels is useful any time you need to treat the two sides of a stereo recording differently, or check that a mix is balanced correctly.

Checking channel balance

Listening to each channel alone quickly reveals whether a recording is leaning too far to one side or has an unwanted hum on only one channel.

Dual-mono recordings

Some interviews and field recordings put one microphone entirely on the left and another entirely on the right. Splitting lets you use each source independently.

Extracting a panned element

If a vocal, instrument or backing track was mixed hard to one side, isolating that channel can help you hear it more clearly on its own.

Preparing for mono workflows

Some tools and formats expect single-channel audio. Splitting gives you a clean mono WAV file from either side of a stereo source.

Channel splitter FAQ

What does splitting audio channels do?

It separates a stereo file into two independent mono files, one containing only what was in the left channel and one containing only what was in the right channel.

Why would I want to isolate one channel?

Common uses include checking for channel imbalance, extracting a vocal or instrument that was mixed to one side, working with dual-mono recordings, or preparing audio for further mono processing.

What happens if I upload a mono file?

If the file only has one channel, the left and right outputs will be identical since there is no second channel to separate.

What audio formats can I upload?

Any format your browser can decode, including MP3, WAV, M4A and OGG. Both channel outputs are exported as WAV files.

Is my audio file uploaded to a server?

No. The channels are extracted entirely in your browser using the Web Audio API. Your file never leaves your device.