There are a number of paper size standards used in the world today, the most commonly used being the international ISO standard and a standard used in North America. These sizes are used to order various printed items such as stationery, brochures, digital copies, fliers, etc. The charts below detail and compare these sizes and their dimensions.
Paper Sizes (Metric A, B, North American ARCH)

ANSI paper sizes illustration N. American ANSI Sizes
ANSI A:
8.5 in. x 11 in.
(215.9 mm x 279.4 mm)

ANSI B:
11 in. x 17 in.
(279.4 mm x 431.8 mm)

ANSI C:
17 in. x 22 in.
(432 mm x 559 mm)

ANSI D:
22 in. x 34 in.
(559 mm x 864 mm)

ANSI E:
34 in. x 44 in.
(1118 mm x 864 mm)
North American Architectural paper sizes illustration N. American ARCH Sizes
Arch A:
9 in. x 12 in.
(229 mm x 305 mm)

Arch B:
12 in. x 18 in.
(305 mm x 457 mm)

Arch C:
18 in. x 24 in.
(457 mm x 610 mm)

Arch D:
24 in. x 36 in.
(610 mm x 914 mm)

Arch E:
36 in. x 48 in.
(1914 mm x 1219 mm)

North America

SIZE WIDTH (in.) HEIGHT (in.) WIDTH (mm) HEIGHT (mm)
Business Card 3.5 in. 2 in. 85.6 mm 53.98 mm
Executive 7.5 in. 10 in. 190.5 mm 254 mm
Jr. Legal 8 in. 5 in. 203.2 mm 127 mm
Letter/ANSI A 8.5 in. 11 in. 215.9 mm 279.4 mm
Legal 8.5 in. 14 in. 215.9 mm 355.6 mm
Ledger/Tabloid/ANSI B 11 in. 17 in. 279.4 mm 431.8 mm
ANSI C 17 in. 22 in. 432 mm 559 mm
ANSI D 22 in. 34 in. 559 mm 864 mm
ANSI E 34 in. 44 in. 864 mm 1118 mm
Arch A 9 in. 12 in. 229 mm 305 mm
Arch B 12 in. 18 in. 305 mm 457 mm
Arch C 18 in. 24 in. 457 mm 610 mm
Arch D 24 in. 36 in. 610 mm 914 mm
Arch E 36 in. 48 in. 1914 mm 1219 mm
Arch E1 30 in. 42 in. 762 mm 1067 mm
Arch E2 26 in. 38 in. 660 mm 965 mm
Arch E3 27 in. 39 in. 686 mm 991 mm