Pt px Concept

Source: Internet
Author: User

The width of a 10 pt font is required for a webpage today. After thinking about it for a long time, I did not calculate it. I checked the information and finally calculated it. by the way, let's take a look at the pt ps and DPI concepts:

PT: in the printed layout, "point" is an absolute unit. It is equal to 1/72 inch. It can be measured by a ruler in a physical inch.

PS: Our display is divided into pixels, and a single pixel can only have one color (for simplicity, we will not discuss the next pixel anti-sawtooth technology). It should be displayed on the screen, you must first convert the length in PT units to the length in pixels. The conversion media is DPI (in fact, the so-called DPI here, is the term used in operating systems and browsers, I .e., PPI, pixels per inch, which is different from DPI in scanners, printers, and digital cameras ).

In XP, the default PPI of IE browser is 96. In fact, 9pt = 9*1/72*96 = 12px.

I used 10pt, 10pt = 10*1/72*96 = 13.3px = 14px.

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