Most Fractional Rulers are based on the English measuring system where scales are graduated in units of one inch and fractions of an inch. Decimal Rulers have graduations or marks which are based on the decimal system such as 0.5, 0.25, 0.1, 0.05, etc. Fractional Rulers have graduations or marks based on fractions, for example 1/2", 1/4" 1/8", 1/16", etc. There are two types of scales commonly used on rulers Fractional and Decimal. 1 inch equals 2.54 centimeters(cm), 1 cm approximately equivalent to 3/8 inch or equals 0.393700787 inchįractional inches to cm & mm conversion table.1 meter = 100 centimeters = 1,000 millimeters.1 centimeter(cm) = 10 millimeters(mm).If you would like measure the length of something, You can set the pixels per inch (PPI) according your own device. If you would like this online ruler in actual size, So i set the default pixels per inch(PPI) is 100.7 for myself. I found the markings are not very accurate at 30cm, After that, you can see the list of different inches and centimeters rulers on the page. I google the PPI reference and found 100 PPI to my screen,Īfter i measure the size of virtual ruler by a actual ruler, Firstly, open the Printable Ruler page on your web browser. The diagonal screen is 15.6"(inches) of my laptop computer, resolution is 1366x768 pixels. 3.25" = 3 1/4"Īdjusting this virtual ruler to actual size To convert decimal inch to fractional inch, fill decimal inch into the blank Decimal inch.To convert fractional inch to mm or cm, fill fraction into the blank Fractional inch, e.g.
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