📏 Online Ruler
Measure objects using your screen. Accurate ruler in inches and centimeters.
Place your object on screen to measure. Ruler is calibrated for your screen DPI.
This free utility tool is designed to solve everyday problems quickly. Simply input your data and get instant results. All processing happens locally — your information stays private and secure. Bookmark this page to access it whenever you need it. The tool works on desktop and mobile devices, and supports offline use when installed as a PWA.