How to change the Paper Size of a Document in Microsoft Word

Default paper size in the United States is typically 8.5 by 11 inches. However, in most foreign countries documents are formatted on metric-sized paper. The most common of these is called A4 paper, and it measures 210 by 297 millimeters (approximately 8.25 by 11.75 inches).

To change the paper size of a document:

1. From the Page Layout tab, in the Page Setup group, click the Size button.

2. From the expanded list, click the desired paper size.

3. If the size you need is not listed, click the More Paper Sizes button at the bottom of the pane to display more sizes.