Website overview
About RealRuler
RealRuler is a free, browser-based screen ruler and measurement workspace for computers, tablets and phones. It displays centimetres, millimetres, inches and pixels, with four synchronized ruler edges around one workspace. Visitors can use the live X/Y crosshair, add coordinate markers and place alignment guides. When measuring physical objects, users can calibrate the display with a supported device profile, screen diagonal or standard bank card, then verify the scale. Pixel measurements work without physical calibration. No account, app installation or camera access is required.
At a glance
Key features
- Measure in centimetres, millimetres, inches and screen pixels.
- Show synchronized ruler scales along the top, bottom, left and right edges.
- Read live X/Y coordinates with a crosshair and add exact point markers.
- Place horizontal and vertical alignment guides on the measurement workspace.
- Calibrate physical units with a device profile, screen diagonal or bank card.
Practical details
What can you use this website for?
Calibrate the display, place a small object against the on-screen scale, and read its length in cm, mm or inches; use pixel mode to check layout dimensions.
Who is it for?
Students, teachers, designers, makers and anyone who needs quick screen measurements.
What to know
What makes it different?
Unlike a single-edge ruler, RealRuler combines four synchronized scales with live coordinates, markers and alignment guides in one browser workspace. Physical units can be calibrated to the current display; pixels are available immediately.
About this listing
Information about features, pricing and suitability is supplied by the submitter, not independently verified by Zearches. Websites are screened against submission and safety rules, but inclusion is not an endorsement.
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