The most frequently used paper size is A4 measuring 210 by 297 millimetres (8.27 in × 11.7 in). The standard dimensions are rounded to the nearest millimetre.

ISO 216 is an international standard for paper sizes, used around the world except in North America and parts of Latin America. The standard defines the " A ", " B " and " C " series of paper sizes, which …

Dec 2, 2025 · A4 is an international standard paper size defined by ISO (standard ISO 216). Its dimensions are 210 x 297 mm, or 8.27 x 11.69 inches. Its height-to-width aspect ratio is …

Proportions of the A4 size compared to other sizes. An A4 has a surface area of 210 x 297 millimetres. In inches, this is 8.27 x 11.69 inches. An A4 paper fits in a C4 envelope without having to fold the …

A4 paper size in centimetres (cm). A piece of A4 paper measures 21 x 29.7 cm or 210 x 297 mm. Like the other types of paper in the A series, the size of a sheet of A4 is defined by the international …

A4 is the closest ISO 216 paper size to US Letter and Legal paper sizes. A4 297mm (11.7") is slightly longer than Letter 279mm (11.0") but slightly shorter than Legal 356mm (14.0").

A4 size measures 8.27 x 11.69″ in inches, 21.0 x 29.7 in cm, 210 x 297 in mm, equivalents to US Letter paper size. Dimensions vary in pixels. Check it now

What is the A4 Paper Size? The ISO 216 Standard Explained. When you grab a standard piece of paper, you’re likely holding an A4 paper size sheet, defined by the brilliant ISO 216 standard. This …

On this page, we answer the question: What is A4 size? An A0 sheet has a surface area of 1 m². The length-to-width ratio of an A0 sheet, and all sizes in the A-series, is √2:1. The area of an A4 sheet is …