Web Design Font Size Measurements : Convert Points to Pixels,EMS and Percentages when web designing
Web design industry all over the world uses different units of measurements to specify the sizes of the elements on a webpage. On this page we try to provide a comprehensive set of tools to convert from one unit to another for the web designers who are working with multiple units. PT ) points) , PX ( Pixels) , EMS and Percentages can be converted using the tools below.
PT to PX Converter ( Points to Pixels) – PT to PX Calculator
PX to PT Converter ( Pixels to Points ) – PX to PT Calculator
PX, PT, EMS and Percent Conversion Chart
Here’s a chart that converts points to pixels (and ems and %). It’s an approximation, which will depend on font, browser and the operating system.
These are important to know when you are doing web designs that fit to every screen.
In below chart we are listing some frequently used measurements in Points, Pixels, Ems and Percents.
1 px = 0.75 point; 1 point = 1.333333 px
Some commonly used values are in the below chart for your easy reference.
What is PT or Points used in Typography / Web Design
In typography, the point ( PT) is the smallest unit of measure. It is used for measuring font size, leading, and other items on a printed page. The size of the point has varied throughout the history of printing. Since the 18th century, the point’s size has varied from 0.18 to 0.4 millimeters. Source
What is PX or Pixel used in Typography / Web Design
A pixel (px) at 96DPI (dots per inch) is equal to 0.2645835 millimeters, 0.010416675 inches, or 0.75 point. It is a measurement of how tall a font is in pixels which are visible on your computer screen. So, if a font is 12 pixels in height, that means it takes up 12 pixels on your screen from the top of the letter, to the bottom, which also includes the characters that have sections which are under the guide line, such as a “p” character.
What is EM or EMS used in Typography / Web Design
An em is a unit of measurement. Just like pixels, ems can determine the size of elements on a web page. Unlike pixels, which are absolute, ems are relative to their parent’s font size. Therefore Em value can be calculated using the below formula.
Value in Ems = Expected Pixel Value / Inherited Pixel Value
Inherited Pixel value is the parent’s font size.