Use a style set to change line spacing for an entire document
1. On the Home tab, in the Styles group, click Change Styles..
2. Point to Style Set, and point to the various style sets. Using the live preview, notice how the line spacing changes from one style set to the next.
For example, the Traditional and Word 2003 style sets use single-spacing. The Manuscript style set uses double spacing.
3. When you see spacing that you like, click the name of the style set.
Change the line spacing in a portion of the document
1. Select the paragraphs for which you want to change the line spacing.
2. On the Home tab, in the Paragraph group, click Line Spacing.
Word Ribbon Image
3. Do one of the following:
* Click the number of line spaces that you want.
For example, click 2.0, to double-space the selected paragraph. Click 1.0 to single-space with the spacing that is used in earlier versions of Word. Click 1.15 to single-space with the spacing that is used in Word 2007.
* Click Line Spacing Options, and then select the options that you want under Spacing. See the following list of available options for more information.
Line spacing options
Single This option accommodates the largest font (font: A graphic design applied to all numerals, symbols, and alphabetic characters. Also called type or typeface. Arial and Courier New are examples of fonts. Fonts usually come in different sizes, such as 10 point, and various styles, such as bold.) in that line, plus a small amount of extra space. The amount of extra space varies depending on the font that is used.
1.5 lines This option is one-and-one-half times that of single line spacing.
Double This option is twice that of single line spacing.
At least This option sets the minimum line spacing that is needed to fit the largest font or graphic on the line.
Exactly This option sets fixed line spacing, expressed in points. For example, if the text is in a 10-point font, you can specify 12 points as the line spacing.
Multiple This option sets line spacing that can be expressed in numbers greater than 1. For example, setting line spacing to 1.15 will increase the space by 15 percent, and setting line spacing to 3 increases the space by 300 percent (triple spacing).
Note If a line contains a large text character, graphic, or formula, Word increases the spacing for that line. To space all lines evenly within a paragraph, use exact spacing and specify an amount of space that is large enough to fit the largest character or graphic in the line. If items appear cut off, increase the amount of spacing.