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of 20 or 24 pounds (9.1 or 10.9 kg) – the weight of 500 sheets (a ream) of 17-by-22-inch (431.8 by 558.8 mm) paper at 70 °F (21 °C) and at 50% humidity. One ream of 20-pound Letter-sized paper weighs 5 pounds (2.3 kg), and a single Letter-sized sheet of 20-pound paper weighs
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made Letter-size paper the norm for US federal forms in the early 1980s; previously, the smaller "official" Government Letter size, 8 by 10.5 inches (203.2 by 266.7 mm) (aspect ratio: 1.3125), was used in government, while 8.5-by-11-inch (215.9 by 279.4 mm) paper was standard in most other
199:
size, which since pre-modern times refers to page sizes of 8 to 9 inches (200 to 230 mm) wide and 10 to 11 inches (250 to 280 mm) high, and it is indeed almost exactly one quarter of the old
Imperial (British) paper size known as
280:"US Letter" is the primary paper size used in Belize, Canada, Chile, Colombia, Costa Rica, El Salvador, Guatemala, Mexico, Nicaragua, Panama, Philippines, Puerto Rico, United States, Venezuela according to
168:. Some metric information is typically included on American ream packaging. For example, 20-pound paper is also labeled as 75 g/m. The most common density of A4 paper is 80 g/m.
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Comparison of Letter (shaded light blue) and
Government letter sizes with some similar paper and photographic paper sizes
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standard at 210 mm × 297 mm (8.27 in × 11.7 in) used by most other countries, defined in
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191:, the 11-inch length of the standard paper being about a quarter of "the average maximum stretch of an experienced
175:(colloquially Half Letter) is exactly one half of the US Letter size: 8.5 by 5.5 inches (215.9 by 139.7 mm).
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The precise origins of the dimensions of US letter-size paper (8.5 × 11 in) are not known. The
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96:. It measures 8.5 by 11 inches (215.9 by 279.4 mm) and is similar in use to the
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says that the standard US dimensions have their origin in the days of manual
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Blocksma, Mary. Reading the
Numbers. New York: Penguin Books, 1989.
195:'s arms". The letter size falls within the range of the historical
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0.16 ounces (4.536 g), which is equivalent to 75.19
80:, commonly used as home or office stationery primarily in the
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In the US, paper density is usually measured in "pound per
318:"Why is the standard paper size in the U.S. 8 ½" x 11"?"
159:" (of 500 sheets). Typical Letter paper has a
106:International Organization for Standardization
41:Letter paper tiled with equilateral triangles
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152:≈ 13.901 inches (353.1 mm) in length.
232:inches (440 by 570 mm) – allowing a
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316:American Forest and Paper Association.
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185:American Forest & Paper Association
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78:American National Standards Institute
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355:. London: Studio Vista. p. 74.
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242:inch (13 mm) for trimming.
171:The related paper size known as
295:from the original on 2024-05-03
27:Paper size of 8.5 by 11 inches
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288:Common Locale Data Repository
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29:
30:Not to be confused with
351:Fyffe, Charles (1969).
283:"Territory Information"
262:Paper size#Loose sizes
92:, and variably across
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161:basis weight of paper
118:Reagan administration
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383:Mechanical standards
324:on February 20, 2012
72:standard defined in
291:. 45. 2024-04-16.
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49:A Letter-size page
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353:Basic Copyfitting
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326:. Retrieved
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123:aspect ratio
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64:(officially
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32:Letter sheet
18:Letter paper
202:demy quarto
189:papermaking
90:Philippines
388:Stationery
377:Categories
328:2014-02-20
299:2024-05-03
268:References
88:, and the
70:paper size
293:Archived
246:See also
149:8.5 + 11
143:diagonal
98:A4 paper
257:ISO 216
237:⁄
227:⁄
213:⁄
179:History
173:Invoice
147:√
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112:Details
104:by the
102:ISO 216
76:by the
68:) is a
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197:quarto
193:vatman
86:Canada
66:ANSI A
62:Letter
157:reams
357:ISBN
116:The
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166:g/m
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
