Banana journal > B0 B1 B2 B3 B4 B5 B6 B7 B8 Paper Sizes

B0 B1 B2 B3 B4 B5 B6 B7 B8 Paper Sizes

More Detailed Information about B-Series Paper Size

The dimensions of the B series paper sizes are defined by the ISO 216 international paper size standard. It is not as popular as A (where A4 is very common) series but this paper dimension is usually used on stationery, cards and posters. B series was brought into being to provide a wider range of paper sizes

Each B series size is between an A series paper size. For example, B5 measures between A4 and A5.

The B series uses an aspect ratio of 1:√2. The standard lengths and widths of the B series are rounded to the nearest millimeter.

Complete information on ISO paper formats, including the A and C series, their origin, purpose, use and distribution can be found on Wikipedia or much more scientific Wikipedia article

Paper Size Chart

The B-Class actually runs all the way to a tiny B10 size. Below, you’ll find a paper size chart detailing all the sizes in the B-series in cm, mm and inches.

Paper	Millimeters	Centimeters	Inches
B0	1000×1414	100,0×141,4	39,4×55,7
B1	707×1000	70,7×100,0	27,8×39,4
B2	500×707	50,0×70,7	19,7×27,8
B3	353×500	35,3×50,0	13,9×19,7
B4	250×353	25,0×35,3	9,8×13,9
B5	176×250	17,6×25,0	6,9×9,8
B6	125×176	12,5×17,6	4,9×6,9
B7	88×125	8,8×12,5	3,5×4,9
B8	62×88	6,2×8,8	2,4×3,5
B9	44×62	4,4×6,2	1,7×2,4
B10	31×44	3,1×4,4	1,2×1,7

And this is not all, there are even more B-class paper sheet dimensions!

Paper	Millimeters	Centimeters	Inches
B11	22×31	2,2×3,1	0,9×1,2
B12	15×22	1,5×2,2	0,6×0,9
B13	11×15	1,1×1,5	0,4×0,6
B0+	1118×1580	111,8×158,0	44,0×62,2
B1+ (B1XL)	720×1020	72,0×102,0	28,3×40,2
B2+	520×720	52,0×72,0	20,5×28,3

The B1+ 1050 mm × 750 mm (41.3 in × 29.5 in) also named B1XL, and B2+ 750 mm × 530 mm (29.5 in × 20.9 in) are both uncut and oversize of B sizes. They are not defined by ISO216 standard, because they do not follow the √2:1 size ratio. This kind of size is used for special needs of the printing and related industries.

Math of paper dimensions

Format B is homothetic. Each paper size is a perfect half of the larger size. Folding a B0 size creates an B1 size, folding an B1 size creates an B2 size, and so on.

In other words, each size is based on the square root of two. This is why two pieces of paper with the same proportions can fit perfectly together when placed alongside one another.

The B paper sizes are a bit larger than their A series counterparts and are based on the geometric mean of two consecutive A series sheets. For example, B4 is between A3 and A4 in size, and B5 is between A4 and A5.

While the format A was created on the basis of a surface (A0 measures strictly 1 m²), format B was based on a measure of size: B0 width is 1 meter. Area of B0 is 1,414 Square meter.

As such, it is easy to know the width of all B formats dividing B0’s one. However, it is more complicated to calculate its weight, since the weight of the paper is most often expressed in g/m², in reference to A0.

Paper Size Comparison and Uses

B series is less common in office use; it is more regularly used in commercial printing to describe the width of a press where multiple pages are laid on one larger sheet:

B3 paper is used to print two US letter or A4 pages side by side.
Four pages would be printed on a B2 sheet.
Eight pages would be printed on a B1 sheet.

The B-series is widely used in printing to accommodate for both paper size and printing press size. This format allows widening the margins to integrate a sheet from the A series and of the same number.

B sheets are often used to print two A sheets at once. For example, one B3 covers two A4 and one B2 has room for four A4.

B5, B6 are used for printing books. B4 is for newspapers, supported by most copying machines in addition to A4. Popular B8 use is playing cards.

B0 size

Width: 1000 mm
Height: 1414 mm
Pixels: 11811 x 16838 pixels at 300 DPI resolution

Main uses of B0 paper: large posters, banners, blueprints, technical drawings, maps, large-scale artworks.

B1 size

Width: 707 mm
Height: 1000 mm
Printing surface: 7070 cm² or 0,707 m²
Pixels: 8347 x 11811 pixels at 300 DPI resolution

Main uses of B1 paper: posters, detailed plans, drawings, large prints, maps.

B2 size

Width: 500 mm
Height: 707 mm
Printing surface: 3535 cm² or 0,3535 m²
Pixels: 5906 x 8347 pixels at 300 DPI resolution

Main uses of B2 paper: posters, magazines, catalogs, brochures, medium-sized prints, detailed plans and blueprints.

B3 size

Width: 353 mm
Height: 500 mm
Printing surface: 1765 cm² or 0,1765 m²
Pixels: 4173 x 5906 pixels at 300 DPI resolution

Main uses of B3 paper: brochures, posters, advertisements, booklets, pamphlets, art prints, magazine inserts.

B4 size

Width: 250 mm
Height: 353 mm
Printing surface: 882.5 cm² or 0,08825 m²
Pixels: 2953 x 4205 pixels at 300 DPI resolution

Main uses of B4 paper: brochures, flyers, books, magazines, letterheads, invoices, art prints.

B5 size

Width: 176 mm
Height: 250 mm
Printing surface: 440 cm² or 0,044 m²

Main uses of B5 paper: books, journals, magazines, letterheads, invoices, notebooks, brochures and flyers.

B6 size

Width: 125 mm
Height: 176 mm
Printing surface: 220 cm² or 0,022 m²
Pixels: 1474 x 2080 pixels at 300 DPI resolution

Main uses of B6 paper: small books, novels, postcards, invitations, notepads, letterhead, pocket-sized notebooks, brochures and flyers.

B7 size

Width: 88 mm
Height: 125 mm
Printing surface: 110 cm² or 0,011 m²
Pixels: 1038 x 1474 pixels at 300 DPI resolution

Main uses of B7 paper: pocket-sized notebooks, postcards, invitations, note cards, reminder slips, brochures, flyers, labels and tags.

B8 size

Width: 62 mm
Height: 88 mm
Printing surface: 54,56 cm² or 0,005456 m²
Pixels: 732 x 1038 pixels at 300 DPI resolution

Main uses of B8 paper: tickets, tags, labels, business cards, note cards, reminder slips, small brochures and flyers, small art prints and photography displays.

RB & SRB Paper Sizes

In the early days, the sizes of B paper series encountered the same problem as the sizes of A paper series, that was, in industrial printing, the paper edge ink penetration might cause the problem of insufficient size after cutting. In this case, paper sizes such as RB (Raw Format B) and SRB (Supplementary Raw Format B) were also introduced. The aim was that after cutting out the ink stained paper edges, the remaining size is exactly the standard ISO216 sizes.

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.

Paper	Millimeters	Centimeters	Inches
RB0	1025×1449	102,5×144,9	40,4×57,0
RB1	725×1025	72,5×102,5	28,5×40,4
RB2	513×725	51,3×72,5	20,2×28,5
RB3	363×513	36,3×51,3	14,3×20,2
RB4	257×363	25,7×36,3	10,1×14.3

Paper	Millimeters	Centimeters	Inches
SRB0	1072×1516	107,2×151,6	42,2×59,9
SRB1	758×1072	75,8×107,2	29,8×42,2
SRB2	536×758	53,6×75,8	21,1×29,8
SRB3	379×536	37,9×53,6	14,9×21,1
SRB4	268×379	26,8×37,9	10,6×14,9

B-series Paper Size in Pixels

There is no exact correspondence between the paper size and pixels. This depends of the resolution of your device.

Table shows B series paper size in pixels (DPI or Dots Per Inch here is the same as PPI or Points Per Inch):

Paper	72 PPI	96 PPI	300 PPI
B0	2835×4008	3780×5344	11 811×16 701
B1	2004×2835	2672×3780	8350×11 811
B2	1417×2004	1890×2672	5906×8350
B3	1001×1417	1334×1890	4169×5906
B4	709×1001	945×1334	2953×4169
B5	499×709	665×945	2079×2953
B6	354×499	472×665	1476×2079
B7	249×354	333×472	1039×1476
B8	176×249	234×333	732×1039
B9	125×176	166×234	520×732
B10	88×125	117×166	366×520

Frequently Asked Questions

What size is b0?

B0 dimensions are 1000×1414 millimeters or 100,0×141,4 centimeters, or 39,4×55,7 inches.

What size is b1?

B1 dimensions are 707×1000 millimeters or 70,7×100,0 centimeters, or 27,8×39,4 inches.

What size is b2?

B2 dimensions are 500×707 millimeters or 50,0×70,7 centimeters, or 19,7×27,8 inches.

What size is b3?

B3 dimensions are 353×500 millimeters or 35,3×50,0 centimeters, or 13,9×19,7 inches.

What size is b4?

B4 dimensions are 250×353 millimeters or 25,0×35,3 centimeters, or 9,8×13,9 inches.

What size is b4 paper?

B4 paper dimensions are 250×353 millimeters or 25,0×35,3 centimeters, or 9,8×13,9 inches.

What size is b5?

B5 dimensions are 176×250 millimeters or 17,6×25,0 centimeters, or 6,9×9,8 inches.

What size is b5 in cm?

B5 dimensions are 17,6×25,0 centimeters.

What size is b5 paper?

B5 dimensions are 176×250 millimeters or 17,6×25,0 centimeters, or 6,9×9,8 inches.

What size is b5 paper in inches?

B5 dimensions are 6,9×9,8 inches.

What size is b6?

B6 dimensions are 125×176 millimeters or 12,5×17,6 centimeters, or 4,9×6,9 inches.

What size is b6 paper?

B6 paper dimensions are 125×176 millimeters or 12,5×17,6 centimeters, or 4,9×6,9 inches.

What does b5 mean in printing?

B5 means paper dimensions 176×250 millimeters or 17,6×25,0 centimeters, or 6,9×9,8 inches.

What is iso b1 paper size?

ISO B1 paper dimensions are 707×1000 millimeters or 70,7×100,0 centimeters, or 27,8×39,4 inches.

What is iso b4 size?

ISO B4 dimensions are 250×353 millimeters or 25,0×35,3 centimeters, or 9,8×13,9 inches.

How big is b2 paper?