Screen Resolution Test — What is My Screen Resolution?
Instantly view your active monitor hardware resolution, browser viewport dimensions, OS scaling multiplier (DPR), and color depth.
Hardware Display Canvas & Viewport Mapping
Understanding Display Resolution Metrics
Standard browser APIs distinguish between physical desktop dimensions, available working desktop area (excluding system docks and taskbars), and CSS viewport dimensions.
Frequently Asked Questions
What is the difference between Screen Resolution and Browser Viewport?
Screen Resolution represents the total pixel dimensions of your active monitor as reported by your operating system (e.g. 2560×1440). Browser Viewport is the inner dimensions of your web browser window currently available for displaying webpage content.
What is Device Pixel Ratio (DPR)?
Device Pixel Ratio (DPR) is the scaling ratio between physical hardware pixels and CSS logical pixels. On a 2× Retina or 150% scaled Windows display, DPR is 2.0 or 1.5, allowing text and graphics to render at high density without appearing tiny.
Related Resolution Tools
Explorer les 25 outils →Screen Size Test
InchesCalculate physical diagonal size (inches/cm), aspect ratio, and viewable surface area.
PPI Test
PPICalculate exact pixel density (PPI), pixel pitch (mm), total megapixels, and optimal viewing distances.
Sharpness Test
L/mmEvaluate subpixel text clarity, edge aliasing, scaling halos, and moiré interference patterns.
Monitor Test
ScoreMulti-stage screen assessment covering geometry, color gamut, gradients, text clarity, and contrast.
FPS Test
FPSAccurately measure your browser frame rate, average FPS, 1% lows, and instantaneous render stability.