What are the specific sizes of all kinds of office paper?

The format size stipulated by the state is an international standard series, which has been incorporated into the national industry standard GB/T 1999 and implemented nationwide. At present, the format size of books and periodicals is mainly series A specifications, as follows: \ x0d \ a4 (16k) 297mm× 210mm; \ x0d \ A5(32k)2 10mm× 148mm； \ x0d \ A6(64k) 144mm× 105mm； \ x0d \ A3(8k)420mm×297mm； \x0d\ Note: The size of A3(8k) has not been determined, but it is widely used. \ x0d \ x0d \ A4 copy paper in our daily life, 8K paper refers to these sizes, that is, the size of A4 paper (16K paper) is 297mm×2 10mm, and the size of 32K notebook (A5 notebook) is 2 1cm× 65438+. \x0d\\x0d\ Paper size description: \x0d\a2 Paper size (large size 4) 594mm×420mm \x0d\a3 Paper size (large size 8) 420mm×297mm \x0d\a4 Paper size (large16) 297mm. Paper can be divided into newsprint, relief paper, offset paper, glossy coated paper, matt paper, bible paper, map paper, gravure paper \ x0d \ x0d \ ordinary paper can be divided into 60gsm, 80gsm, 12300gsm, 105gsm and 120gsm by weight. \x0d\8 is 8, and the size is 390X270mm. If it is not in word, set it yourself. \x0d\ fully open, load 8 sheets, and measure it. \ x0d \ x0d \ The specification of paper refers to that after paper is made, it is trimmed and cut into a certain size. In the past, the paper size was expressed by the number of "open" (such as 8 open or 16 open, etc.). ). Now I adopt the international standard, and stipulate that the format specifications of paper are expressed by A0, A 1, A2, B 1, B2, etc ... The standard stipulates that the proportional relationship between the width (expressed by X) and the length (expressed by Y) of paper is X: Y =1:n ... \. 189mm, width1m2; The width of B0 is 1000mm? 4 14mm with a width of 2.5 square meters; Is the width dimension of C0 917mm? 279mm, width area of 2.25 square meters; The format specification of copy paper only adopts A series and B series. If A0 paper is split in half along the length direction, it becomes A 1 specification; If A 1 paper is split along the length direction, it becomes A2 specification, and so on, it becomes A8 specification; B8 paper is also split into B8 standard in this way. The format sizes of A0 ~ A8 and B0 ~ B8 are shown in the following table. Among them, seven format specifications such as A3, A4, A5, A6, B4, B5 and B6 are commonly used specifications for copy paper. \x0d\\x0d\ For example, "A4" paper is a type-A paper with basic size folded four times, so the area of an A4 paper is a quarter of the area of the basic paper, that is,116. The rest and so on. \x0d\\x0d\ never thought about the size of the screen before. I always think that it is difficult to convert pixels into basic units such as millimeters and centimeters, and we have to consider the resolution. Last time, I confidently made a resume cover, and the picture was very effective, but it was blurred and ugly when printed on A4 paper. Today, I specially studied this problem, which is actually not difficult. The analysis is as follows: \ x0d \ A4 paper size is 2 10mm*297mm, that is, 2 1.0cm*29.7cm, while 1 inch =2.54cm and the resolution is 72pixels/inch, we convert it into pixels /cm, that is, 28.3. Now, when we make a picture, we convert it into pixels (2655 \x0d\ Similarly, we can get: \x0d\ When the resolution is 300 pixels/inch, the A4 size is 2479 * 3508; (in pixels) \x0d\ When the resolution is 120 pixels/inch, the A4 size is 1487*2 105. (in pixels) \x0d\ So if you want to print a picture, you'd better convert it first, otherwise it will probably reduce the picture quality! Generally speaking, if it is printed matter, it is best to use 300 pixels/inch, and if it is printer or inkjet, you can choose a resolution of 72 pixels/inch. \ x0d \ x0d \ A0 = 1 189 * 84 1 \ x0d \ a 1 = 84 1 * 594 \ x0d \ A2 = 594 * 420 \ x0d。