Actual Size Ruler

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Handy Online Ruler

This is an online vitrual ruler that can be adjusted to an actual size, before you use it, please set the pixels per inch to your own device. This is useful to me and welcome to share it or use it.

Adjusting this virtual ruler to actual size

There are some ways to know the pixels per inch(PPI) to your devie.
  1. My laptop has a wide screen (13.6"x7.6"), and resolution is 1366x768 pixels, 1366 / 13.6 = 100.44 PPI.
  2. Google display by pixel density, i am lucky and found my screen has 100 PPI.
  3. Check your wallet, use any paper money to be our compare object, then search "the width of your paper money" online, when you know the width, you can adjust the PPI setting by it.
  4. The most accurate way, after i measure the size of virtual ruler by an actual ruler, i found the markings are not very accurate at 30cm, so i adjust the default pixels per inch(PPI) to 100.7, now i get an online actual size ruler.

Save the pixels per inch (PPI) according your own device, then you can use this ruler next time.
Pixels per inch : , show ruler adjuster

Dragging ruler adjuster left or right to fit the size of the reference, remember to save the setting for next time, after save the setting, refresh your brower to check the result. On the most popular browsers you can press the F5 key or click on the refresh button.

What do you think about this online ruler?

Try this ruler on your smartphone

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Share to your good friends

Welcome to share this online ruler to your freineds, if you do like it.

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