Gamma Test
Test your monitor gamma calibration with a grayscale step chart. Check if your display shows accurate brightness levels.
Each step should be distinguishable. If dark steps blend together, gamma is too high. If light steps blend, gamma is too low.
A properly calibrated display at gamma 2.2 should show all 11 steps as distinct shades from black to white.
How does this test work?
A gamma test shows grayscale steps from black to white. On a correctly calibrated display (gamma 2.2), all 11 steps should be visually distinguishable with smooth progression.
How to use the Gamma Test
Open the Gamma 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
What is the correct gamma setting?+
The standard gamma for most displays is 2.2. This provides accurate brightness reproduction for photos, video, and web content.
Related Tests
Contrast Test
Test your display contrast with near-black and near-white steps. Check if your monitor clips shadow or highlight detail.
HDR Test
Check if your display supports HDR (High Dynamic Range) and its color gamut. Test shadow and highlight detail.
Screen Uniformity Test
Test your display for uniformity issues including clouding, dirty screen effect, tinting, and banding using gray and white test screens.