B Paper Sizes Table
The following table gives the sizes of each of the ISO 216 B paper sizes in millimetres (mm), centimetres (cm), metres (m), inches (in) and feet (ft).
|Size||L x W mm||L x W cm||L x W m||L x W in||L x W ft|
|B0||1414 x 1000 mm||141.4 x 100.0 cm||1.414 x 1.000 m||55.7 x 39.4 in||4.639 x 3.280 ft|
|B1||1000 x 707 mm||100.0 x 70.7 cm||1.000 x 0.707 m||39.4 x 27.8 in||3.280 x 2.320 ft|
|B2||707 x 500 mm||70.7 x 50.0 cm||0.707 x 0.500 m||27.8 x 19.7 in||2.320 x 1.640 ft|
|B3||500 x 353 mm||50.0 x 35.3 cm||0.500 x 0.353 m||19.7 x 13.9 in||1.640 x 1.158 ft|
|B4||353 x 250 mm||25.3 x 25.0 cm||0.353 x 0.250 m||13.9 x 9.8 in||1.158 x 0.820 ft|
|B5||250 x 176 mm||25.0 x 17.6 cm||0.250 x 0.176 m||9.8 x 6.9 in||0.820 x 0.577 ft|
|B6||176 x 125 mm||17.6 x 12.5 cm||0.176 x 0.125 m||6.9 x 4.9 in||0.577 x 0.410 ft|
|B7||125 x 88 mm||12.5 x 8.8 cm||0.125 x 0.088 m||4.9 x. 3.5 in||0.410 x. 0.289 ft|
|B8||88 x 62 mm||8.8 x 6.2 cm||0.088 x 0.062 m||3.5 x 2.4 in||0.289 x 0.203 ft|
|B9||62 x 44 mm||6.2 x 4.4 cm||0.062 x 0.044 m||2.4 x 1.7 in||0.203 x 0.144 ft|
|B10||44 x 31 mm||4.4 x 3.1 cm||0.044 x 0.031 m||1.7 x 1.0 in||0.144 x 0.102 ft|
B Paper Sizes Chart
Based on chart from Office 365 Stationery
The chart to the right shows the relationships and relative sizes of the ISO 216 B paper sizes, showing how a single sheet of all the smaller sizes will fit onto an B0 sheet.
The ISO 216 B paper sizes were added to the standard to provide sizes that weren't covered by the A paper sizes, they fit in between the A sizes such that B1 is between A0 and A1.
ISO 216 specifies B paper sizes as follows:
Size B(n) is the geometric mean between size A(n) and size A(n-1).
The ration of the longer side to the shorter side is 1.4142:1 (sq root 2:1)
B(n) is B(n-1) divided into two parallel to the shorter edge.
All sizes are rounded to the nearest millimetre as the root 2 aspect ratio doesn't give whole numbers.
Note: A geometric mean of two numbers is the square root of the two numbers multiplied together. For example the geometric mean of 6 and 4 is Sq Root(6x4) = Sq Root 24.
The following formal tolerances are specified by ISO 216 for general production environments. The tolerances are the same as those for the A paper sizes.
±1.5 mm (±0.06 in) for sizes up to 150 mm (5.9 in)
±2 mm (±0.08 in) for sizes between 150 and 600 mm (5.9 to 23.6 in)
±3 mm (±0.12 in) for sizes above 600 mm (23.6 in)