The A Series paper size chart, below left, gives a visual representation of how the sizes relate to each other - for example A5 is half of A4 size paper and A2 is half of A1 size paper.

A series paper sizes and dimensions are defined by the ISO 216 international paper size standard. The A series is comman and world wide used paper size. The base A0 size of paper is defined as having an area of 1 m2 and a dimension ratio of 1 to √2.

Paper size refers to standardized dimensions for sheets of paper used globally in stationery, printing, and technical drawing. Most countries adhere to the ISO 216 standard, which includes the widely recognized A series (including A4 paper), defined by a consistent aspect ratio of √2.

ISO standard A paper size chart including A0, A1, A2, A3, A4, A5, A6, A7, A8, A9 and A10. Dimensions in inches, cm, mm, and pixels in different ppi/dpi.

Paper size chart of international A papers. A0 – 841 × 1189 mm / 33.1 × 46.8 inches; A1 – 594 × 841 mm / 23.4 × 33.1 inches; A2 – 420 × 594 mm / 16.5 × 23.4 inches; A3 – 297 × 420 mm / 11.7 × 16.5 inches; A4 – 210 × 297 mm / 8.3 × 11.7 inches; A5 – 148 × 210 mm / 5.8 × 8.3 inches; A6 – 105 × 148 mm / 4.1 × 5.8 inches

Discover global paper dimensions including standard A, B, C sizes, US letter & legal and more. Reference international formats from Japanese, Swedish and French to Chinese, transitional and imperial. Learn ratios, origins and uses.

The area of each of the A paper sizes are set by the A paper size definitions (see below). A0 is defined as having an area of 1 square metre, however the A paper size standard also specifies that each size is rounded to the nearest millimetre.

This little website shows you any paper size along with the standard and dimensions of the width and height in both millimeters and inches. Standards include American National Standards …

Paper Size Chart. In order to visualise the different A-Series paper sizes, try to compare each one in relation to the paper size that is one grade larger. Each paper size is a perfect half of the larger size. Folding an A0 size creates an A1 size, folding an A1 size creates an A2 size, and so on.