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A1 paper dimensions. The size of A1 paper is 594 x 841 mm or 59.4 x 84.1 cm, which is 23.4 x 33.1 inches. It’s normally used for advertising purposes, such as large posters and display banners. It can also be used in professional settings, for flipcharts and architectural drawings. Compared to other A series formats, a sheet of A1 paper is the same as: half an A0 sheet two A2 sheets four A3 sheets eight A4 sheets (and so on…) A1 is the second largest size in the ISO A series, measuring 23.39 x 33.11 in inches, 594 x 841 in mm, and 59.4 x 84.1 in cm. It is widely used in Europe, Asia, and Africa for posters, technical drawings, art, and photography. Find the dimensions and formats of A1 paper and other paper sizes in different standards, such as mm, US, envelope and international. Compare A1 with other paper sizes and see examples of A1 paper products. A1 is the second largest of the A series paper sizes defined by ISO 216. It has an area of 0.5 square meters and a √2 aspect ratio. Learn about its origins, uses, and how it relates to other A sizes.
