# Paper size

Size

Unit

Dimensions

B0

B1

B2

B3

B4

B5

B6

B7

B8

B9

B10

A Sizes

C Sizes

in

mm

cm

m

inches

More Units

is

250 x 353

Dimensions Of B Series Paper Sizes

The dimensions of the B series paper sizes, as defined by ISO 216, are given in the table belowin both millimetres and inches (cm measurements can be obtained by dividing the mm value by 10). The B Series paper size chart is a visual explanation of how the B paper sizes relate to each other.

B Series Paper Sizes Chart.

Table of Paper Sizes From B0 to B10

B Paper 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

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

More units here

.

B Series Paper Size Tolerances

ISO 216 specifies tolerances for the production of B series paper sizes in the same way asfor A series paper sizes, the specific details of which are 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)

B Series Paper Sizes Definition

The B series paper sizes are defined in

ISO 216

in the following way.

The B series paper sizes were created in order to provide paper sizes that weren't coveredby the A series, but also use an aspect ratio of 1:root2. B sizes are defined as size B(n) being thegeometric mean of size A(n) and size A(n-1). The

Geometric Means

The square root of the product of two numbers.

This system gives a useful property for enlarging and reducing documents in that the enlargementfrom A(n) to B(n) is the same as that from B(n) to A(n-1).

As with the A series paper sizes, the standard lengths and widths are rounded to the nearest millimetre.

Uncut B Sizes B2+ and B1XL

B2+ and B1XL (Also known as B1+) are oversize/uncut B paper sizes. These are notdefined 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

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