B1 Paper Size

B1 is a format in the B series paper, and the B series paper is a series of commonly used papers in the ISO 216 international paper standard, mainly used for posters, books, etc., the width of the B1 paper is 707mm(27.8 inches) and the height is 1000mm(39.4 inches).

Format/name	B1
Width(mm)	707 mm
Width(in)	27.8 inches
Height(mm)	1000 mm
Height(in)	39.4 inches

Taking our commonly used credit cards as a reference, the size of the credit card is 85.6 mm x 53.98 mm (3.4 in X 2.1 in). The paper size of B1 format is approximately 8.3 times the width of the credit card and approximately 18.5 times the height of the credit card.

ISO 216 is an international standard is a universal standard all over the world except in North America (the United States and Canada) and parts of Latin America.

B Series Paper Size

Format/name	Width × Height (mm)	Width × Height (cm)	Width × Height (in)
B0	1000 × 1414 mm	100 × 141.4 cm	39.4 × 55.7 in
B1	707 × 1000 mm	70.7 × 100 cm	27.8 × 39.4 in
B2	500 × 707 mm	50 × 70.7 cm	19.7 × 27.8 in
B3	353 × 500 mm	35.3 × 50 cm	13.9 × 19.7 in
B4	250 × 353 mm	25 × 35.3 cm	9.8 × 13.9 in
B5	176 × 250 mm	17.6 × 25 cm	6.9 × 9.8 in
B6	125 × 176 mm	12.5 × 17.6 cm	4.9 × 6.9 in
B7	88 × 125 mm	8.8 × 12.5 cm	3.5 × 4.9 in
B8	62 × 88 mm	6.2 × 8.8 cm	2.4 × 3.5 in
B9	44 × 62 mm	4.4 × 6.2 cm	1.7 × 2.4 in
B10	31 × 44 mm	3.1 × 4.4 cm	1.2 × 1.7 in
B11	22 × 31 mm	2.2 × 3.1 cm	0.9 × 1.2 in
B12	15 × 22 mm	1.5 × 2.2 cm	0.6 × 0.9 in
B13	11 × 15 mm	1.1 × 1.5 cm	0.4 × 0.6 in
B0+	1118 × 1580 mm	111.8 × 158 cm	44 × 62.2 in
B1+	720 × 1020 mm	72 × 102 cm	28.3 × 40.2 in
B2+	520 × 720 mm	52 × 72 cm	20.5 × 28.3 in