Convert Points to Ems
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Converting Points to Ems
Converting points to ems is valuable in responsive web design and typography, allowing for more flexible and scalable text sizing that adapts to different viewing contexts and user preferences.
Mathematical Relationship
The mathematical relation between points and ems depends on the base font size. Assuming a standard base font size of 16 pixels (12 points): 1 em = 12 points. To convert a size in points to ems with this base, divide the point value by 12.
Common Conversion Values
| Points | Ems |
|---|---|
| 6 | 0.5 |
| 12 | 1 |
| 18 | 1.5 |
| 24 | 2 |
| 36 | 3 |
Unit Definitions
Points
The point (symbol: pt) is a unit of length used in typography, equal to 1/72 of an inch. It is traditionally used to measure font sizes, line heights, and other typographic elements in print design.
Ems
The em (named after the letter 'M') is a relative unit of measurement in typography, equal to the current font size. In web design, 1 em is equal to the font size of the parent element, making it useful for creating scalable and responsive designs.
Historical Context
The point has been used in typography since the 18th century and was standardized at 1/72 inch in the 20th century. The em has ancient origins in typography, traditionally based on the width of the capital 'M' in a font. In digital typography, it evolved to represent the height of the font and became crucial for responsive web design.