A column inch was the standard measurement of the amount of content in published works that use multiple columns per page. A column inch is a unit of space one column wide by high. A newspaper page Newspaper pages are laid out on a grid that consists of a margin on 4 sides, a number of vertical columns and space in between columns, called gutters. Broadsheet newspaper pages in the United States usually have 6-9 columns, while tabloid sized publications have 5 columns. Column width In the United States, a common newspaper column measurement is about 11 picas wide —about —though this measure varies from paper to paper and in other countries. The examples in this article follow this assumption for illustrative purposes only. Column inches and advertising Newspapers sell advertising space on a page to retail advertisers, advertising agencies and other media buyers. Newspapers publish a "per column inch" rate based on their circulation and demographic figures. Generally, the more readers the higher the column inch rate is. Newspapers with more affluent readers may be able to command an even higher column inch rate. For most newspapers, however, the published rate is just a starting point. Sales representatives generally negotiate lower rates for frequent advertisers. Advertisements are measured using column inches. An advertisement that is 1 column inch square is 11 picas wide by 1 inch high. The column inch size for advertisements that spread over more than one column is determined by multiplying the number of inches high by number of columns. For example, an advertisement that is 3 columns wide by 6 inches high takes up 18 column inches (3 columns wide multiplied by 6 inches high). To determine the cost of the advertisement, multiply the number of column inches by the newspaper's rate. So, if a newspaper charges $10 per column inch, the cost for the advertisement discussed above would be $180.00 (18 column inches multiplied by $10.00). Advertisements that span over more than one column also gain a small amount of extra space in between columns because they stretch across the gutters. Gutters are the empty space between columns. Gutters range from about 10 points to about 1 pica wide. In addition, most newspapers charge for an extra column if an advertisement is a double truck. Terminology In the newspaper industry, ad and newsroom staffers will refer to an advertisement's size by saying "it's a