An online screen ruler tool for accurate on-screen measurements. Measure in actual size using centimeters, millimeters, inches, or pixels.

Aug 20, 2025 · Learn how to use PowerToys Screen ruler to quickly measure pixels on your screen with image edge detection. Get started with activation shortcuts and measurement tools.

A free, accurate online ruler that measures in real size on your screen. Calibrate with a bank card, click and drag to measure a span, switch units, go vertical or full screen.

Sep 4, 2022 · Screen Ruler is a lightweight and configurable ruler tool for Windows Desktop. It allows you to measure the size of elements on the screen in different units, including pixels, centimeters …

Mar 26, 2019 · An on screen ruler for a Windows Desktop PC user who needs to keep an eye on a line of data whilst looking at something else and back again. One often sees people pointing at the …

Free browser-based measurement and utility tools: screen ruler, online protractor, random spinner. No download required.

Use our online actual size ruler to accurately measure objects in both centimeters and inches. Print-ready and calibrated for your screen.

Free online ruler in cm, mm, and inches with true actual size after a 30-second calibration by credit card, paper, or screen size. Drag markers, corner ruler, printable ruler.

iRuler.net are trying to detect size of your screen and then shows ruler in actual size. We are using machine learning to identifying your device, so each time you specifying correct size you are making …

For the ruler to display correctly (i.e., in proportion to the actual physical size), it must be calibrated. You can calibrate it in one of the following two ways: 📱 💻 📺 Set screen diagonal This is the most reliable and …