How Big Is An A4-Size Piece Of Paper?


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Danielle Joynson Profile
An A4 sheet of paper is measured at 11.96 inches tall and 8.27 inches wide.

How Big Are 'A' Sheets of Paper?
The majority of paper types are defined as 'A4' or 'A3' and so on, and come in varying sizes.

All 'A' sizes of sheets of paper have an aspect ratio of 1:1.41.

This basically means that the width and height of a piece of paper relate to each other in the same way that the diagonal and side of a square relate to each other.

The largest page size in the series is A0, which has an area of one square metre. Each time the page size is reduced by half, the number of its name increases. Therefore, A1 is half the size of A0, A2 half the size of A1, and so on.

How Did the Sizes Develop?
Today's standard sheet sizes are believed to have been introduced towards the end of the 18th century. Research suggests that Germany was the first country to establish the standard sheet size in 1922. Not long after that, other European countries adopted these standard sizes of paper, too.

What is a Standard Letter Size?
A4 paper is the most common page size, and is commonplace within workplaces, schools and at home.

There is also another format known as standard letter size. This page is 11 inches tall and 8.5 inches wide. However, some people consider a piece of paper to be letter size if it is wider than 5 inches, but has a length that is shorter than 11.5 inches.
Anonymous Profile
Anonymous answered
A4 paper is the metric equivalent of 8 and a 1/2 inch by 11 inch paper. It measures 210mm by 297mm, which equates to approximately 8 and a 1/4 inches by 11 and 11/16 of an inch. In other words, it is slightly narrower and a bit longer than letter size paper.

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