Left Right Speaker Test
Test left and right speaker channels independently. Verify your stereo setup is wired correctly.
Click Left or Right to play a tone through that channel only. If sound comes from the wrong side, your speakers or headphones may be swapped.
How does this test work?
A left right speaker test plays audio through one channel at a time so you can verify each speaker is on the correct side and both channels work independently.
How to use the Left Right Speaker Test
Open the Left Right Speaker Test on any device with a modern browser — desktop, laptop, tablet, or phone. No downloads, plugins, or signup required. The tool loads instantly and works in Chrome, Firefox, Safari, Edge, and other Chromium-based browsers.
Follow the on-screen instructions to run the test. Results are displayed immediately in your browser. You can repeat the test as many times as needed. For the most accurate results, close other tabs and applications to reduce interference.
Privacy: This test runs entirely in your browser using standard web APIs. No data is collected, uploaded, or stored on any server. Camera, microphone, keyboard, mouse, and controller inputs are processed locally and never leave your device. DeviceKit does not use analytics cookies or tracking scripts.
Browser note: Some hardware values are estimated because browsers limit direct access to device hardware for security and privacy reasons. Results may vary slightly between browsers and operating systems. For the most reliable measurements, use an up-to-date version of Chrome or Edge on a desktop computer.
Frequently Asked Questions
My left and right speakers are swapped. What do I do?+
Check your speaker cables — left and right may be connected to the wrong terminals. On headphones, check the L/R markings. You can also swap channels in your OS sound settings.
Related Tests
Speaker Test
Test your speakers with different frequency tones. Check bass, midrange, and treble reproduction.
Headphone Test
Test your headphones for left ear, right ear, and stereo audio. Verify both drivers are working.
Stereo Polarity Test
Test if your speakers or headphones have correct stereo polarity. Detect reversed wiring that causes phase cancellation.