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Screen ruler
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About this tool
Display a horizontal or vertical CSS-pixel ruler with optional physical-unit calibration.
Common uses
- Display a horizontal or vertical CSS-pixel ruler with optional physical-unit calibration.
- Set a length from 40 to 1600 CSS pixels and choose orientation.
How to use it
- 1.Set a length from 40 to 1600 CSS pixels and choose orientation.
- 2.Choose pixels, millimeters, centimeters or inches; calibrate CSS pixels per unit before physical measurement.
Limits and notes
- The default assumes 96 CSS pixels per inch. Display density and zoom make uncalibrated physical measurements approximate.
Frequently asked questions
What does this tool do?
Display a horizontal or vertical CSS-pixel ruler with optional physical-unit calibration.
What should I check before using the result?
The default assumes 96 CSS pixels per inch. Display density and zoom make uncalibrated physical measurements approximate.