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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