I might not be wrong If I say that everything you need is available over the web. Internet is not only a source of information but also a storage of our daily usage things. If you're in an urgent need of physical ruler to measure anything then Internet is solution for you. Yes! I said it right, you can find online virtual rulers to measure any quantity such as Inches (in) or metric (cm, mm). These free online rulers are not as accurate as physical rulers but they can be an option if you've not got one.
Basically there are 3 methods to calibrate virtual rulers. These are as:
- By referring to your monitor (pixels per inch)
- By comparing with the size of commonly used objects (Objects are taken as reference).
- By referring to your monitor screen size in inches.
Out of all these calibration ways, ruler which are based on screen size doesn't contain complete accuracy. I have arranged all the online ruler websites according to their popularity and accuracy. Some of them contain millimeter ruler, centimeter ruler while some inch ruler.
Top 10 Actual Size Online Rulers
iRuler is placed at first position in our list due to the accuracy it's providing. You can measure cm, mm and even inch with this ruler.
It supports cm, inch and pixels.
There's an option 'drag it' to drag the ruler freely anywhere on the screen. If you're not sure about your monitor screen size then you can use piliapp's comparing tool to measure actual monitor size.
An online ruler with centimeters and inches. You can drag this ruler by ctrl+drag to rotate. Just check the flipped option to separate it from the screen.
It provides both simple ruler and L-Square. You can switch between both these. Both cm and inch options are provided too.
It is powered by HTML5 and JavaScript. It uses the canvas element. Ruler image is dynamic and adjusts/calibrates itself based on the options you select. You can adjust ' Graduation of an inch' and 'Show 1/8" markings'.
It will automatically detect your screen size resolution and shows ruler according to it. You can choose either vertical or horizontal ruler.
This ruler is written completely in CSS and will display correctly as long as your computer is correctly configured.
A Ruler for Windows is a free on-screen pixel ruler / reading for Windows 10, 8.1, 8, 7, Vista, XP and 2000. The ruler lets you quickly and easily measure objects on your screen. It's ideal for designing web sites, working with graphics and perfecting the look of your digital products.
If you've got any other accurate online ruler then let us know. We would be happy to update it here.