Measurement
Measure objects on your screen with an online ruler or calculate aspect ratios and missing dimensions.
About Measurement Tools
Toolvica's measurement tools let you measure real-world objects directly on your screen and calculate aspect ratios instantly. The online ruler works in centimeters or inches on any device, while the aspect ratio calculator helps you find missing dimensions and maintain proportions for images, videos, and designs. Both tools are free, private, and work entirely in your browser.
Frequently Asked Questions
What measurement tools are included?
Two tools: the Online Ruler for measuring physical objects on your screen in cm or inches, and the Aspect Ratio Calculator for finding missing dimensions, scaling proportionally, and comparing aspect ratios side by side.
Does the ruler work on any screen size?
Yes. The ruler auto-calibrates to your device's pixel density. It works on phones, tablets, and desktops. For best accuracy, keep browser zoom at 100% — OS display scaling is handled automatically.
Are these measurement tools accurate?
The ruler uses devicePixelRatio for accurate calibration on modern screens. OS display scaling (125%, 150%) is handled automatically. The aspect ratio calculator uses precise math for exact results.