All tools
Every tool runs in your browser, and nothing about your screen is sent to us.
Detect Screen size detector Resolution, pixel ratio, aspect ratio and refresh rate, live. Measure What is my monitor size? Your real screen size in inches, using any bank card. Detect Screen resolution checker See how your resolution compares with 4K, 1440p and 1080p. Compare Compare screen sizes Any two screens, drawn to scale. Compare iPhone size comparison Any two iPhones, drawn to scale. Compare TV size comparison Common TV sizes nested on one floor line. Calculate TV size calculator The right TV size for your seating distance. Calculate Screen size calculator Width, height and area from any diagonal and ratio. Calculate PPI calculator Pixel density from size and resolution. Calculate Resolution scale calculator Display scaling, render scale and your pixel ratio, live. Calculate Projector screen size calculator Picture size from throw distance, or the distance for a screen. Calculate Aspect ratio calculator Find any ratio, or resize to one without stretching. Measure Actual-size ruler A ruler drawn at true size on your screen. Calculate VESA mount finder Check your mounting holes against the standard patterns. Test All screen tests Every screen test in one place, with what each one checks. Test Dead pixel test Full-screen colors to spot dead, stuck and hot pixels. Test Stuck pixel test and fixer Find a stuck pixel and try to free it. Test Refresh rate test Check your display runs at its full Hz. Test Touch screen test Find dead zones and ghost touches, and count touch points. Test White screen test Full-screen white for dust, tint and dead pixels. Test Black screen test Full-screen black for backlight bleed and glow. Test Monitor color test Solid colors, gray steps and gradients. Test LCD test Backlight and pixel checks for LCD screens. Test OLED screen test Near black, burn-in and pixel checks for OLED. Test Monitor uniformity test Flat grays for dim corners, tint and clouding. Test Gradient banding test Smooth gradients that show color banding. Test Monitor contrast test Black level, white level and gamma patterns. Test Monitor sharpness test One pixel lines, edges and small text.