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MM or CM to Fractions of Inches

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MM : = CM : = Inch : = Fraction :
Fill MM, CM, decimal inch or fraction to convert

Graduation of an inch: ",

How to use this tool

Adjusting this virtual ruler to actual size

The diagonal screen is 15.6"(inches) of my laptop computer, resolution is 1366x768 pixels. I google the PPI reference and found 100 PPI to my screen, after i measure the size of virtual ruler by a actual ruler, i found the markings are not very accurate at 30cm, so i set the default pixels per inch(PPI) is 100.7 for myself.

If you would like this online ruler in actual size, you can set the pixels per inch (PPI) according your own device.
Pixels per inch :

If you would like measure the length of something, we have an online actual size ruler, welcom to try it.

MM, CM, Inch

Fractional Ruler

There are two types of scales commonly used on rulers; Fractional and Decimal. Fractional Rulers have graduations or marks based on fractions, for example 1/2", 1/4" 1/8", 1/16", etc.. Decimal Rulers have graduations or marks which are based on the decimal system such as 0.5, 0.25, 0.1, 0.05, etc.. Most Fractional Rulers are based on the English measuring system where scales are graduated in units of one inch and fractions of an inch.

Length Unit Converters

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Area Converter

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