Measurement Tools
Measure physical objects and calculate screen parameters directly on your display. Calibrate our virtual ruler to display actual physical sizes in inches and centimeters, or compute screen aspect ratios and Pixels Per Inch (PPI) density to optimize media layouts and design work.
Online Ruler
A calibrated virtual ruler on your screen to measure objects in inches, centimeters, and millimeters.
Aspect Ratio Calculator
Calculate display aspect ratios and check scaling options for resolution dimensions.
PPI Calculator
Calculate the Pixels Per Inch (PPI) and Pixel Pitch of any screen based on resolution and size.
Measurement Tools Frequently Asked Questions
Common questions and answers regarding our measurement tools calculators and methods.
Calibrating the ruler requires entering your screen's physical diagonal size in inches. This calculates the physical size of each pixel on your monitor, rendering a ruler that matches physical inches and centimeters.
PPI (Pixels Per Inch) measures the pixel density of a screen. DPI (Dots Per Inch) measures the density of ink dots printed on paper. While similar, they apply to digital vs. printed mediums.
The modern widescreen standard is 16:9, which is the default aspect ratio for high-definition television, computer monitors, and YouTube video layouts.