The B Series Paper Sizes is defined in the standard as a subsidiary series of sizes that obtained by placing the geometrical means between adjacent sizes of the A series in sequence. The use of the geometric mean makes each step in size: B0, B1, B2, B3, B4, B5, B6, B7, B8, B9, B10, smaller than the previous one by the same factor. There are many other paper size standards conventions have existed at different times and in different countries worldwide.

The B Series Paper Sizes Standard folding one in half and rounding down to the nearest millimeter gives the next in the series. It is defined by divided by 2 or half the size of the previous paper in a larger dimension. It can be used for writing paper, cards, printing documents, envelopes, and also in applications such as Microsoft Office like Word or Excel.

## B0, B1, B2, B3, B4, B5, B6, B7, B8, B9, B10

### B0 Paper Sizes

The dimension of B0 Paper Sizes in mm, cm, inch:

• B0 Size in mm is 1000 × 1414 millimeter.
• B0 Size in cm is 100 × 141.4 centimeter.
• B0 Size in inch is 39.4 × 55.7 inches.

### B1 Paper Sizes

The dimension of B1 Paper Sizes in mm, cm, inch:

• B1 Size in mm is 707 × 1000 millimeter.
• B1 Size in cm is 70.7 × 100 centimeter.
• B1 Size in inch is 27.8 × 39.4 inches.

### B2 Paper Sizes

The dimension of B2 Paper Sizes in mm, cm, inch:

• B2 Size in mm is 500 × 707 millimeter.
• B2 Size in cm is 50 × 70.7 centimeter.
• B2 Size in inch is 19.7 × 27.8 inches.

### B3 Paper Sizes

The dimension of B3 Paper Sizes in mm, cm, inch:

• B3 Size in mm is 353 × 500 millimeter.
• B3 Size in cm is 35.3 × 50 centimeter.
• B3 Size in inch is 13.9 × 19.7 inches.

### B4 Paper Sizes

The dimension of B4 Paper Sizes in mm, cm, inch:

• B4 Size in mm is 250 × 353 millimeter.
• B4 Size in cm is 25 × 35.3 centimeter.
• B4 Size in inch is 9.84 × 13.9 inches.

### B5 Paper Sizes

The dimension of B5 Paper Sizes in mm, cm, inch:

• B5 Size in mm is 176 × 250 millimeter.
• B5 Size in cm is 17.6 × 25 centimeter.
• B5 Size in inch is 6.93 × 9.84 inches.

### B6 Paper Sizes

The dimension of B6 Paper Sizes in mm, cm, inch:

• B6 Size in mm is 125 × 176 millimeter.
• B6 Size in cm is 12.5 × 17.6 centimeter.
• B6 Size in inch is 4.92 × 6.93 inches.

### B7 Paper Sizes

The dimension of B7 Paper Sizes in mm, cm, inch:

• B7 Size in mm is 88 × 125 millimeter.
• B7 Size in cm is 8.8 × 12.5 centimeter.
• B7 Size in inch is 3.46 × 4.92 inches.

### B8 Paper Sizes

The dimension of B8 Paper Sizes in mm, cm, inch:

• B8 Size in mm is 62 × 88 millimeter.
• B8 Size in cm is 6.2 × 8.8 centimeter.
• B8 Size in inch is 2.44 × 3.46 inches.

### B9 Paper Sizes

The dimension of B9 Paper Sizes in mm, cm, inch:

• B9 Size in mm is 44 × 62 millimeter.
• B9 Size in cm is 4.4 × 6.2 centimeter.
• B9 Size in inch is 1.73 × 2.44 inches.

### B10 Paper Sizes

The dimensions of B10 Sizes in mm, cm, inch:

• B10 Size in mm is 31 × 44 millimeter.
• B10 Size in cm is 3.1 × 4.4 centimeter.
• B10 Size in inch is 1.22 × 1.73 inches.

### Table of The B Series Paper Sizes

Here is a Table of The B Series Paper Sizes in unit of measurements in mm, cm, inches.

B Series Paper Sizes
Sizemmcminch
B01000 × 1414100 × 141.439.4 × 55.7
B1707 × 100070.7 × 10027.8 × 39.4
B2500 × 70750 × 70.719.7 × 27.8
B3353 × 50035.3 × 5013.9 × 19.7
B4250 × 35325 × 35.39.84 × 13.9
B5176 × 25017.6 × 256.93 × 9.84
B6125 × 17612.5 × 17.64.92 × 6.93
B788 × 1258.8 × 12.53.46 × 4.92
B862 × 886.2 × 8.82.44 × 3.46
B944 × 624.4 × 6.21.73 × 2.44
B1031 × 443.1 × 4.41.22 × 1.73

The tolerances specified in the standard are:

• ±1.5 mm for dimensions up to 150 mm,
• ±2.0 mm for dimensions in the range 150 to 600 mm, and
• ±3.0 mm for dimensions above 600 mm.

These are related to comparison between series A, B and C.