US Paper Sizes

About US Paper Sizes

The United States is using a different paper size system compare to the rest of the world. They have different sizes standard sizes. The US Letter paper size is the most popular size used throughout the US. It is used in Canada and Philippines also.

Letter, Legal, Ledger and Tabloid are most commonly used for everyday activities. In 1996, the American National Standards Institute adopted ANSI/ASME Y14.1 which defined a regular series of paper sizes based upon the de facto standard 8 1⁄2 in × 11 in (216 mm × 279 mm) Letter size which it assigned "ANSI A", intended for technical drawings, hence sometimes labeled "Engineering". This series is somewhat similar to the ISO standard in that cutting a sheet in half would produce two sheets of the next smaller size and therefore also includes Ledger/Tabloid as "ANSI B".

The ARCH series of paper sizes is defined in the ANSI/ASME Y14.1 standard. The ARCH sizes are commonly used by architects for their large format drawings. The ARCH series preferred by North American architects instead of ANSI because the aspect ratios (4:3 and 3:2) are ratios of small integers. Furthermore, the aspect ratio 4:3 matches the traditional aspect ratio for computer displays.

US Paper Sizes
Format Width × Height (mm) Width × Height (in)
Letter 216 x 279 mm 8.5 x 11 in
Legal 216 x 356 mm 8.5 x 14 in
Tabloid 279 x 432 mm 11 x 17 in
Ledger 432 x 279 mm 17 x 11 in
Junior Legal 127 x 203 mm 5 x 8 in
Half Letter 140 x 216 mm 5.5 x 8.5 in
Government Letter 203 x 267 mm 8 x 10.5 in
Government Legal 216 x 330 mm 8.5 x 13 in
ANSI A 216 x 279 mm 8.5 x 11 in
ANSI B 279 x 432 mm 11 x 17 in
ANSI C 432 x 559 mm 17 x 22 in
ANSI D 559 x 864 mm 22 x 34 in
ANSI E 864 x 1118 mm 34 x 44 in
Arch A 229 x 305 mm 9 x 12 in
Arch B 305 x 457 mm 12 x 18 in
Arch C 457 x 610 mm 18 x 24 in
Arch D 610 x 914 mm 24 x 36 in
Arch E 914 x 1219 mm 36 x 48 in
Arch E1 762 x 1067 mm 30 x 42 in
Arch E2 660 x 965 mm 26 x 38 in
Arch E3 686 x 991 mm 27 x 39 in

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