Paper Sizes

A Series Paper Sizes - Quick Lookup

Size Unit Dimensions
in is

Select the standard paper size from the ‘Size’ selector and the unit from the ‘Unit’ selector – the dimensions will be shown in the dimensions box.

The dimensions of the A series paper sizes, as defined by the ISO 216 standard, are given in the table to the right of the diagram in both millimetres and inches (cm measurements can be obtained by dividing mm value by 10). 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 chart

A series paper sizes chart

Table of Paper Sizes From 4A to A10

Size Width x Height (mm) Width x Height (in)
4A0 1682 x 2378 mm 66.2 x 93.6 in
2A0 1189 x 1682 mm 46.8 x 66.2 in
A0 841 x 1189 mm 33.1 x 46.8 in
A1 594 x 841 mm 23.4 x 33.1 in
A2 420 x 594 mm 16.5 x 23.4 in
A3 297 x 420 mm 11.7 x 16.5 in
A4 210 x 297 mm 8.3 x 11.7 in
A5 148 x 210 mm 5.8 x 8.3 in
A6 105 x 148 mm 4.1 x 5.8 in
A7 74 x 105 mm 2.9 x 4.1 in
A8 52 x 74 mm 2.0 x 2.9 in
A9 37 x 52 mm 1.5 x 2.0 in
A10 26 x 37 mm 1.0 x 1.5 in

To obtain paper sizes in centimetres, convert mm values to cm by dividing by 10 and in feet by dividing inch values by 12.

 

USA Paper Sizes.

North America, including the US, Canada and parts of Mexico, is the only area of the first world that doesn’t use the ISO 216 standard paper sizes, instead they use Letter, Legal, Executive and Ledger/Tabloid paper sizes and those that have been formalised in ANSI Y14.1M – Metric Drawing Sheet Size & Format. US Envelope Sizes are also non ISO 216 and are listed on this page

The following table gives the sizes in millimeters and inches of the Commonly used American paper sizes.

Size Width x Height (mm) Width x Height (in) Aspect Ratio
Letter 216 x 279 mm 8.5 x 11.0 in 1:1.2941
Legal 216 x 356 mm 8.5 x 14.0 in 1:1.6471
Junior Legal 127 x 203 mm 5.0 x 8.0 in 1:1.6000
Ledger / Tabloid 279 x 432 mm 11.0 x 17.0 in 1:1.5455

 

ANSI Standard Paper Sizes

ANSI (American National Standards Institute) defined a regular series of paper sizes based around the Letter (8.5″ x 11″) format, with this becoming the A sizes and larger sizes being B,C,D & E. Surprisingly these ANSI standard sizes were defined in 1995 well after the ISO standard sizes.

Unlike the ISO standard sizes which have the single aspect ratio of 1:root2, ANSI standard sizes have two aspect ratios 1:1.2941 and 1:1.5455 which means that enlarging and reducing between the sizes is not as easy as with the ISO sizes and leaves wider margins on the enlarged/reduced document.

Size Width x Height (mm) Width x Height (in) Aspect Ratio Nearest ISO
A 216 x 279 mm 8.5 x 11.0 in 1:1.2941 A4
B 279 x 432 mm 11.0 x 17.0 in 1:1.5455 A3
C 432 x 559 mm 17.0 x 22.0 in 1:1.2941 A2
D 559 x 864 mm 22.0 x 34.0 in 1:1.5455 A1
E 864 x 1118 mm 34.0 x 44.0 in 1:1.2941 A0

 

B+ (Super B)

B Plus, or Super B as it is sometimes known, has dimensions of 13″ x 19″ (329mm x 483mm). This size is the ANSI B size with a 1″ margin for print bleed all the way round. It is sometimes known as A3+ or Super A3 in countries that use ISO 216 paper sizes.

 

Architectural Paper Sizes

North America also has a special series of paper sizes defined for architectural purposes, in general these have aspect ratios of 4:3 or 3:2. These aspect ratios are very similar to the aspect ratio used for computer screens.

The following table gives details of the sizes for architectural paper.

Size Width x Height (mm) Width x Height (in) Aspect Ratio
Arch A 229 x 305 mm 9.0 x 12.0 in 4:3
Arch B 305 x 457 mm 12.0 x 18.0 in 3:2
Arch C 457 x 610 mm 18.0 x 24.0 in 4:3
Arch D 610 x 914 mm 24.0 x 36.0 in 3:2
Arch E 914 x 1219 mm 36.0 x 48.0 in 4:3
Arch E1 762 x 1067 mm 30.0 x 42.0 in 7:5

 

US Paper Sizes – Quick Lookup

Select the paper size from the ‘Size’ selector and the unit from the ‘Unit’ selector – the dimensions will be shown in the dimensions box.

Size Unit Dimensions
in is