monitor pixel density, aspect ratio, screen width, multi-monitor and workspace calculators
Compare monitor geometry with transparent formulas
Calculate pixel density, aspect ratio, approximate screen dimensions and combined desktop width from size and resolution.
Tools
Pixel Density (PPI)
Calculate pixels per inch from diagonal resolution and screen size.
Open →ToolsAspect Ratio Decimal
Calculate width-to-height ratio from resolution.
Open →ToolsApproximate Screen Width
Estimate physical screen width from diagonal and pixel aspect ratio.
Open →ToolsApproximate Screen Height
Estimate physical screen height from diagonal and pixel aspect ratio.
Open →ToolsCombined Desktop Pixel Width
Add horizontal resolution across equal side-by-side monitors.
Open →Guides
What PPI tells you
Pixels per inch relates resolution to physical screen size.
GuidesEstimate screen width and height from diagonal
A diagonal plus aspect ratio is enough to estimate rectangular panel dimensions.
GuidesModel a multi-monitor desktop
Combined resolution is easy to calculate when displays are arranged side by side.
GuidesUse aspect ratio as a shape metric
A decimal ratio is useful for comparison even when common labels differ.
GuidesCompare displays with more than one number
PPI, physical size and resolution answer different questions.