A4 size is the setting the measurement of a sheet of paper which is normally used in official and academic documents. In centimeters, the dimension of A4 paper is 21cm X 29.7cm.
A4 paper size can be displayed in different metrics such as millimeters (210mm X 297mm); or in pixels (2480px X 3508px). These dimensions are for the leaves in vertical position, if they are presented in the “landscape” format, the values must be inverted.
Example: A4 landscape size = 297mm x 210mm.
The definition of these configurations is done through the Brazilian Association of Technical Standards, specifically the NBR 10068/87 standard. Also according to ABNT standards, there are different standard sheet sizes that are suitable for each type of material or utility.
Paper sizes (in centimeters)
- A0 = 84.1cm x 118.9cm
- A1 = 59.4cm x 84.1cm
- A2 = 42cm x 59.4cm
- A3 = 29.7cm x 42cm
- A4 = 21cm x 29.7cm
- A5 = 14.8cm x 21cm
- A6 = 10.5cm x 14.8cm
- A7 = 7.4cm x 10.5cm
As seen, the paper size tends to be smaller as the numbers increase. For example, A3 paper is twice as much as A4 paper.
Learn more about sheet size.