Audio Channel Swapper
Swap left and right audio channels in stereo recordings. Perfect for fixing stereo recordings that are out of phase or repositioning stereo content.
Drop your audio file here
or click to browse
Complete Guide: Audio Channel Swapper
Everything you need to know about using this tool effectively
The Audio Channel Swapper switches the left and right channels of a stereo audio file. If something was recorded with the microphones reversed or the stereo image feels backwards, this tool fixes it in seconds. Everything runs in your browser using the Web Audio API, so your files stay on your device.
This tool reads the left and right channels of a stereo audio file using the Web Audio API and writes them back in swapped positions, so left becomes right and right becomes left.
Fixing Reversed Stereo Recordings
When a stereo mic setup accidentally captures audio on the wrong channels left on right, right on left, this tool corrects the issue without re-recording.
Live Recording Corrections
Live concert and event recordings sometimes end up with flipped channels due to cable routing or mixer setup. Swapping channels restores the intended audience perspective.
Film and Video Post-Production
Dialogue or ambient audio captured with reversed stereo channels can be fixed before syncing with video footage, avoiding continuity problems in the final edit.
Headphone Listening Tests
Swap channels to check if a mix sounds equally balanced from each side, or to verify that panning decisions hold up when the stereo image is mirrored.
Podcast and Interview Cleanup
When two speakers are recorded on separate channels and end up on the wrong sides, swapping channels puts each voice where it belongs for a natural listening experience.
Upload Your Stereo File
Click the upload area or drag and drop a stereo audio file (MP3, WAV, OGG, FLAC, etc.) into the tool.
Verify Stereo Input
The tool will display your file information. Confirm the file is stereo as mono files have only one channel and cannot be swapped.
Swap the Channels
Click the swap button to switch the left and right channels. The tool processes the audio instantly in your browser.
Preview the Result
Use the built-in player to listen to the swapped audio and confirm the channels are now in the correct position.
Download Your File
Save the corrected audio as a WAV file to your device. The download preserves the original audio quality.
Use headphones before swapping to identify which channel is which as speakers in a room make it harder to tell left from right
Play both original and swapped versions to confirm the fix, since what seems like a channel issue may be a phase problem
This tool works best on true stereo files, swapping a mono-compatible stereo file will sound identical
If channels have volume imbalance, use the audio normalizer or stereo panner after swapping to fine-tune the result
Always keep the original recording so you can try different corrections later
What does swapping audio channels actually do?
It takes everything playing in the left channel and moves it to the right, and everything in the right channel moves to the left. The audio content itself is unchanged only its stereo position is flipped.
Can I swap channels on a mono audio file?
No. Mono files have a single channel, so there is nothing to swap. You would need a stereo file with separate left and right channel content for this tool to have an effect.
Will swapping channels affect audio quality?
No. The tool moves audio data between channels without applying any compression, filtering, or re-encoding. The output quality matches the input exactly.
Is my audio uploaded to a server?
No. All processing runs locally in your browser using the Web Audio API. Your audio files never leave your device, so your content stays private.
What audio formats are supported?
The tool accepts any format your browser can decode, including MP3, WAV, OGG, FLAC, AAC, and WebM. The output is saved as an uncompressed WAV file.
How is this different from inverting or reversing audio?
Channel swapping flips the stereo positioning (left becomes right). Inverting flips the polarity of the waveform, and reversing plays the audio backwards. These are three separate operations.