In Microsoft Word (and most other systems), fonts are measured in points. An inch is commonly divided into 72 points. You may have observed that some fonts look larger or smaller even if they are the same point size. This has to do with the way the pixels of your screen are rendered; some fonts are pixelated (smaller dots) while others are not (larger dots). Since pixels are small, some fonts will appear bigger than others even if they are the same point size.
Points also control how thick a line you draw. For example, if you double the font-size, you get double the thickness of the line. There's no real way around this; if you want equal lines, you have to make the font size equal.
Finally, points control the height and depth of text boxes. So, for example, if you reduce the point size by half, the text will be half as high as it was before.
The default font on most computers is Times New Roman, which has a point size of 12. If you wanted to make all the letters one inch high, you would need to use a font that had 144 characters per inch; Arial has about 95 characters per inch so it would be difficult to read unless there were lots of them together.
You may think that if you set the font size to 144 points, the letters to be two inches tall. However, at this size, even simple words like "the" and "a" start to look awkward. To make things easier to read, choose a larger font size.
The term "font" refers to a character's overall form. Font sizes are expressed in points; 1 point (abbreviated pt) equals 1/72 inch. The height of a character is represented by the point size. As a result, a 12-point typeface is 1 inch tall. In Microsoft Word 2010, the default font size is 11 points. According to the 2018 IBC building code, a stair tread shall be at least 11" deep when utilized as a method of egress. According to OSHA stairway requirements, a stair tread should be at least 9.5 inches deep for steps utilized as equipment access.
The term "line height" describes the vertical position of all characters on a line. Lines are separated by carriage returns, which start new lines at the bottom of the page. So, a lower case "g" has a different line height than an upper case "G". Line heights are expressed in fractions of the typeface's point size. For example, if the typeface is 10 points, then the line height can be any whole number between 1/10 and 9/10 of the point size.
Line lengths depend on the purpose for which they're used. Short lines are preferred for readability while long lines show off large blocks of text. Most fonts have some variation between their different size types. Small caps use smaller versions of the same letters, so they appear in tighter alignment. Larger versions of these letters stretch out the word.
In general, small caps are used for short words or phrases. They add visual interest to your text and make it more readable. There are two ways to create small caps: You can use the Text Editor tool on the Home tab with the Markup panel open.
Calibri is the default typeface of Microsoft Word 2010. Characters take up more space than on older versions of Word because modern fonts have improved quality. Today, most computer fonts come in four styles: regular, bold, italic, and bold italic.
Points Font sizes are expressed in points; 1 point (abbreviated pt) equals 1/72 inch. A point size of 10 points would be equivalent to 0.8333 inches.
That's why some text onscreen appears to be small and hard to read—it's actually 12 point font.
Eleven points Microsoft Word installs using the Calibri typeface and 11-point font size by default. You can change this point size setting in the Fonts section of the Settings menu.
It was somewhat larger than today's PostScript or DTP point, which measures 0.353 mm, at 0.375 mm. So, if you input a font size of 10 pt in Microsoft Word or Adobe InDesign, you specify a font size of 3.53 mm. This is equivalent to a point size of 72 on the now-defunct Pica standard used by many European printers from the 14th century to the early 20th century.
These days, 1 point equals 2.54 mm, so 10 points would be 27.5 mm. But that was quite large back then!
According to The Typographic Guide by Frederick Rudolph (Addison-Wesley, 1968), 10 points was not an uncommon size for headline type during the late 15th and early 16th centuries. It was also popular in books printed between about 1550 and 1700. After 1700, type began to get smaller and smaller until it reached today's standards with sans serif faces coming out around the 1920s.
Here are some sample text files with different point sizes:
10pt Text File
This text file contains only the character "a". There is no line break after the word "Text" and before the decimal point. The character "a" has been set using the Helvetica Neue font which has a font size of 10 points.