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 …

Yes, I am using {monitor} . Save this settings. No (please select... ) I am using {monitors} I am using -inch screen save settings; I don't know what monitor size is.

In order to accurately measure the length of your item, we strongly recommend that you calibrate this online ruler first, set the correct pixels per inch to your own device, after adjustment, you will have the most precise ruler online. It can talk 🙊.

Our online actual size ruler allows you to take measurements in millimeters, centimeters and inches all at once, giving you the most accurate information. If you need to accurately measure an object, our online tool Actual Size Ruler is the perfect solution.

Online Ruler in Actual Size (inches, cm/mm) — measure something! 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: This is the most reliable and easy way. Specify the size of the diagonal of your screen in inches (").

Free online ruler tool for measuring inches (in), centimeters (cm) and millimeters (mm)! The ruler scales to actual size based on your screen size. Every device has a different pixel density, so we auto-detect your device and scale the ruler accordingly.

This virtual ruler that can be adjusted to true size, that can actually measure the actual length, the upper half is metric ruler (millimetre and centimetre), lower half is inches ruler, before you use this ruler, please set the pixels per inch to your own device. There are some ways to know the pixels per inch (PPI) to your devie.

This is a virtual online ruler, no need to install, just use it directly, you can measure the length on the screen, very convenient, this online ruler in the vertical direction is more suitable for measuring length on the mobile phone screen. To ensure the accuracy of the measurement, we strongly recommend that you calibrate it before you use it.

Mar 14, 2025 · 25 cm is equivalent to approximately 9.84 inches. To convert 25 cm to inches, divide 25 by 2.54. Centimeters and inches are units of measurement used to express length or distance.

Our application creates a virtual ruler equivalent to a real ruler in inches and centimeters on your display. Make sure the application correctly detected the size of your device’s screen. If the measurement is incorrect - specify your screen size in inches manually. Click …