Mengenal Ukuran Kertas

Bekerja di kantor tak lepas dari urusan kertas. Paling banyak digunakan adalah A4 (setahu saya).
Jadi kalau ditanya berapa ukuran kertas Legal atau Letter? Saya tidak bisa langsung jawab… hanya dibayangkan saja lebih lebar atau lebih panjang dari A4. Ini dia ukuran persis nya

What Is A4 Paper?
What Is A4 Size Paper?

Development of Sizes

According to the International Organization of Standardization (ISO), attempts at establishing international standards for paper sizes started as early as the late 18th century.

The first such standard was developed in Germany in 1922 and was slowly adopted by several European countries. Finally, in 1961, the ISO published, ISO/R 216, which established standards for “A” sizes. In 1975, an updated version was passed and supersedes the 1961 standard.
The A4 Size

A4 is an internationally recognized paper size that measures 8.27 inches wide and 11.69 inches tall. All “A” sizes have an aspect ratio of 1:1.41. The largest size, A0, measures 1 square meter. Progressing through the sizes is achieved by halving the sheet parallel to the shortest side; hence an A3 is twice the size of an A4.

Envelope sizes have a “C” prefix and are sized according to the folding of an A4 sheet; C5 will fit an A4 folded once, C6 fits an A4 folded twice, etc.
Letter Size

Letter size paper refers to paper 8.5 inches wide and 11 inches tall. Letter size is a recognized standard adopted by the American National Standards Institute (ANSI).

Letter size envelopes, typically called #10 size, measure 9.25 inches wide and 4.125 inches tall. However, letter size, as described by the U.S. Postal Service (USPS), is any piece wider than 5 inches but less than 11.5 inches and at least 3.5 inches tall, but less than 6.25 inches tall.

Unlike the ISO standards such as A4, letter size can have different meanings depending upon who is referring to it.

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