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Dimensions of US Paper Sizes | Letter, Legal, Tabloid, ANSI,ARCH, etc

ANSI Sizes Paper size
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North American paper sizes

 

 

Loose sizes

 

SizeWidth x Height (in)Width x Height (mm)
Letter8.5 × 11 in216 × 279 mm
Legal8.5 × 14 in216 × 356 mm
Tabloid11 × 17 in279 × 432 mm
Ledger17 × 11 in432 × 279 mm
Junior Legal5 × 8 in127 × 203 mm
Half Letter5.5 × 8.5 in140 × 216 mm
Government Letter8 × 10.5 in203 × 267 mm
Government Legal8.5 × 13 in216 × 330 mm

 

The United States, Canada, and the Philippines primarily use a different system of paper sizes from the rest of the world. The current standard sizes are unique to those countries, although due to the size of the North American market and proliferation of both software and printing hardware from the region, other parts of the world have become increasingly familiar with these sizes (though not necessarily the paper itself). Some traditional North American inch-based sizes differ from the Imperial British sizes described below.

 

Common loose sizes

Letter, Legal and Ledger/Tabloid are by far the most commonly used of these for everyday activities, and the only ones included in Cascading Style Sheets (CSS).

The origins of the exact dimensions of Letter size paper (8 12 in × 11 in or 216 mm × 279 mm) are lost in tradition and not well documented. The American Forest and Paper Association argues that the dimension originates from the days of manual paper making, and that the 11-inch length of the page is about a quarter of “the average maximum stretch of an experienced vatman’s arms.” However, this does not explain the width or aspect ratio.

Outside of North America, Letter size may also be known as “American Quarto”. If one accepts some trimming, the size is indeed one quarter of the old Imperial paper size known as Demy, 17 12 in × 22 12 in (444 mm × 572 mm).

 

 

 

 

ANSI Sizes

 

ANSI Sizes

 

 

SizeWidth x Height (in)Width x Height (mm)
ANSI A8.5 × 11 in216 × 279 mm
ANSI B11 × 17 in279 × 432 mm
ANSI C17 × 22 in432 × 559 mm
ANSI D22 × 34 in559 × 864 mm
ANSI E34 × 44 in864 × 1118 mm

 

The American National Standards Institute (ANSI) adopted ANSI/ASME Y14.1, which defined a series of paper sizes in 1996, based on the standard 8.5 inches x 11 inches (216mm x 279mm) Letter size, which was named ‘ANSI A’. This series is fairly similar to the ISO standard, in that if you cut a sheet in half, you will product two sheets of the next smaller size. Ledger/Tabloid is known as ‘ANSI B’. The most common and widely used size is ANSI A, also known as ‘Letter’.

 

 

 

 

 

Architectural Sizes

 

Architectural Sizes

 

SizeWidth x Height (in)Width x Height (mm)
Arch A9 × 12 in229 × 305 mm
Arch B12 × 18 in305 × 457 mm
Arch C18 × 24 in457 × 610 mm
Arch D24 × 36 in610 × 914 mm
Arch E36 × 48 in914 × 1219 mm
Arch E130 × 42 in762 × 1067 mm
Arch E226 × 38 in660 × 965 mm
Arch E327 × 39 in686 × 991 mm

 

The Architectural series (ARCH) is used by architects in North America, and they prefer to use this series instead of ANSI, because the aspect ratios are ratios of smaller whole numbers (4:3 and 3:2). 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.

 

 

 

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