Measure Pixels and Distances on Screen
An on-screen ruler calibrated to your display's pixel density. Measure elements, distances, and spacing directly on your screen in pixels, inches, or centimeters.
Useful for designers verifying spacing in mockups, developers checking element dimensions, or anyone who needs a quick measurement without opening a design tool.
Click and drag to measure distance
Frequently Asked Questions — Online Ruler
Pixel-accurate on screen. For physical measurements (cm/inches), accuracy depends on your screen's DPI calibration.
Yes. Switch between pixels, centimeters, and inches. Physical units require the screen DPI to be set correctly.
For pixel measurements, no. For physical units, hold a physical ruler to your screen to verify the calibration is correct.
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