Table of Paper Sizes From 4A0 to A10

Table of Paper Sizes From 4A0 to A10

4A0 & 2A0 - The DIN 476 Oversize Formats

The paper sizes bigger than A0, 4A0 & 2A0, aren't formally defined by ISO 216 but are commonly used for oversized paper. The origin of these formats is in the German DIN 476 standard, that was the original base document from which ISO 216 was derived. 2A0 is sometimes described as A00, however this naming convention is not used for 4A0.

A Series Paper Size Tolerances

ISO 216 specifies tolerances for the production of A series paper sizes as follows:

• ±1.5 mm (0.06 in) for dimensions up to 150 mm (5.9 in)
• ±2 mm (0.08 in) for lengths in the range 150 to 600 mm (5.9 to 23.6 in)
• ±3 mm (0.12 in) for any dimension above 600 mm (23.6 in)

A Series Paper Sizes Defined

The A series paper sizes are defined in ISO 216 by the following requirements:

• The length divided by the width is 1.4142
• The A0 size has an area of 1 square metre.
• Each subsequent size A(n) is defined as A(n-1) cut in half parallel to its shorter sides.
• The standard length and width of each size is rounded to the nearest millimetre.

Note: For reference the last item is there because the root 2 aspect ratio doesn't always give a whole number.

For more information about A paper size areas and areas of sizes other than A0 in square metres and square feet click here.

International Usage

The A series paper sizes are now in common use throughout the world apart from in the US, Canada and parts of Mexico. The A4 size has become the standard business letter size in English speaking countries such as Australia, New Zealand and the UK, that formerly used British Imperial sizes. In Europe the A paper sizes were adopted as the formal standard in the mid 20th century and from there they spread across the globe.

RA & SRA Untrimmed Sizes

RA & SRA sizes define untrimmed paper for commercial printing. These formats are designed to allow for ink bleed during the printing process so that the paper can then be trimmed to one of the A series sizes. Click here for more on RA & SRA sizes.

A3+ (Super A3)

A3 Plus, or Super A3 as it is sometimes known, is not an ISO 216 paper size. It has dimensions of 329mm x 483mm (13" x 19"). This gives it an aspect ratio of 1:1.468 rather than the 1:root 2 aspect ratio of the ISO series paper sizes. In actuality the A3+/Super A3 name is quite misleading as this paper size is known as B+ or Super B in the United States and is ANSI B with a 1" margin for print bleed.

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

Table of Paper Sizes From B0 to B10

Size	Width x Height (mm)	Width x Height (in)
B0	1000 x 1414 mm	39.4 x 55.7 in
B1	707 x 1000 mm	27.8 x 39.4 in
B2	500 x 707 mm	19.7 x 27.8 in
B3	353 x 500 mm	13.9 x 19.7 in
B4	250 x 353 mm	9.8 x 13.9 in
B5	176 x 250 mm	6.9 x 9.8 in
B6	125 x 176 mm	4.9 x 6.9 in
B7	88 x 125 mm	3.5 x 4.9 in
B8	62 x 88 mm	2.4 x 3.5 in
B9	44 x 62 mm	1.7 x 2.4 in
B10	31 x 44 mm	1.2 x 1.7 in

Table of Envelope Sizes From C0 to C10

Size	Width x Height (mm)	Width x Height (in)
C0	917 x 1297 mm	36.1 x 51.5 in
C1	648 x 917 mm	25.5 x 36.1 in
C2	458 x 648 mm	18.0 x 25.5 in
C3	324 x 458 mm	12.8 x 18.0 in
C4	229 x 324 mm	9.0 x 12.8 in
C5	162 x 229 mm	6.4 x 9.0 in
C6	114 x 162 mm	4.5 x 6.4 in
C7	81 x 114 mm	3.2 x 4.5 in
C8	57 x 81 mm	2.2 x 3.2 in
C9	40 x 57 mm	1.6 x 2.2 in
C10	28 x 40 mm	1.1 x 1.6 in

Uncut B Sizes B2+ and B1XL

B2+ and B1XL (Also known as B1+) are oversize/uncut B paper sizes. These are not defined by ISO and have come about due to an industry need. The commonly used dimensions for these sizes are given in the following table.

Size	Width x Height (mm)	Width x Height (in)
B1XL	750 x 1050 mm	29.5 x 41.3 in
B2+	530 x 750 mm	20.9 x 29.5 in

Theoretical sizes for RB (105% of the area of the corresponding B size) and SRB (115% of the area) sizes are given in the following tables.

Size	Width x Height (mm)	Width x Height (in)
RB0	1025 x 1449 mm	40.4 x 57.0 in
RB1	725 x 1025 mm	28.5 x 40.4 in
RB2	513 x 725 mm	20.2 x 28.5 in
RB3	363 x 513 mm	14.3 x 20.2 in
RB4	257 x 363 mm	10.1 x 14.3 in

Size	Width x Height (mm)	Width x Height (in)
SRB0	1072 x 1516 mm	42.2 x 59.9 in
SRB1	758 x 1072 mm	29.8 x 42.2 in
SRB2	536 x 758 mm	21.1 x 29.8 in
SRB3	379 x 536 mm	14.9 x 21.1 in
SRB4	268 x 379 mm	10.6 x 14.9 in