A6 Paper Size

A6 paper size is a general small paper size defined by ISO216 standard, which is approximately equivalent to 1/4 of letter paper size in the United States. A6 dimensions are 105 x 148 in mm, or 4.13 x 5.83 in inches, or 10.5 x 14.8 in cm.

A6 Paper Size
A6 Paper Size in inches, cm and mm

A6 size is rarely used in the Americas where US paper sizes are being used; however it is a general size in other countries internationally. In Europe, Asia and Africa, as a very portable paper like pocket size, paper of this size can be used to make paper dictionaries, small notepads, pocket books and other small books; also postcards and employee manuals can be made into this size.

World Regional Distribution of ISO Paper Sizes and American Paper Sizes
World Regional Distribution of ISO Paper Sizes and American Paper Sizes

A6 Size Table

A6 Dimension in inches, mm, and cm

Size # in inches in mm in cm
A6 4.13″ x 5.83″ 105 x 148 10.5 x 14.8

A6 Dimensions in Pixels

A6 dimensions vary in pixels, depending on the PPI/DPI applied.

Size # 72 dpi/ppi
(screen resolution)
96 dpi/ppi
(screen resolution)
300 dpi/ppi
(print resolution)
A6  298 x 420 px 397 x 559 px 1240 x 1748 px

* PPI (pixels per inch) = DPI (dots per inch) = Resolution

As one of the ISO standard paper sizes, A6 sizes fully comply with the principle of paper length ratio of √2:1. Under this rule, each piece of paper cut or folded at the center line of the long side produces a piece of paper of exactly the same size as its aspect ratio, and is named the next on the size number. For example, A6 size is cut from the A5 size, then the A6 size can be cut to produce the A7 size. The entire ISO A series paper size is produced based on this. The A0 is the largest size in the series and is exactly equal to 1 square meter.Then there are A1A2A3A4A5A6A7, and the minimum sizes to A8, A9, A10, etc..

A Paper Sizes Chart
A Paper Sizes Chart

With a small size, paper of A6 size is easy to carry, which makes it perfect to be used as a carrier of propaganda content after printing eye-catching and large font contents and patterns. Therefore, higher paper weight A6 card can also be used to make brochures for distribution in crowded places, because it does not take up space and does not appear messy in places, easy to read, and can really attract people’s attention.

Approximate American Paper Size

The approximate paper size in US to the ISO A6 paper size is known as “4 x 6 inches” or “Postcard size”, which is commonly used for printing postcards, photographs, and small-sized prints. Though not an exact match, it is still the closest approximate in US. The A6 size measures 105 x 148 mm, while the 4 x 6 inches size is approximately 102 x 152 mm. The aspect ratio of both sizes is similar too, but there is a slight difference in dimensions due to the variations in paper size standards between countries.

Main Facts

A6 Dimensions:
in inches: 4.13 × 5.83″
in mm: 105 × 148 mm
in cm: 10.5 × 14.8 cm

Area: 1/64 square meter.

Country of use: Popular in most Non-American countries, occasionally used in US.

Other name: DIN A6 Size

Usage: Applies to small books such as paper dictionaries, small notepads, and pocket books; also postcards, employee manuals, and brochures.

Advantages: The finished product is portable.

Disadvantages: Size is too small for bigger size paper products, and not popular in the Americas.

Ratio: It follows the ratio of ISO216 size standard, length to width: 1.414:1, or √2:1.

Approximate American size: 4 x 6″ paper size or “Postcard size”.