Common Px,pt,em Conversion table

Source: Internet
Author: User

Common Px,pt,em Conversion table

pt (point, LB ) : is a unit of physical length, which refers to an inch of a single size.

px (pixel, pixels ) : is a virtual length unit, is the digital image length unit of the computer system, if PX to be converted to physical length, you need to specify the accuracy dpi (Dots per inch, pixels per inch), in the scan printing generally have dpi optional . The Windows system defaultsto 96dpi, and the Apple system is 72dpi by default.

em ( relative length units, relative to the font size of the text within the current object ) : is a unit of relative length, originally referred to as the width of the letter m, hence the name Em. Now refers to a multiple of the width of the character, using a similar percentage, such as: 0.8em, 1.2em,2em and so on. Usually 1em=16px.

Common Px,pt,em Conversion table

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