A0= 1 189*84 1

A 1=84 1*594

A2=594*420

A3=420*297

A4=297*2 10

Its unit is millimeters.

The format size stipulated by the state is a series of international standards, which have been designated as the national industry standard GB/T 1999 and will be implemented nationwide. At present, the format of books and periodicals is mainly a series of specifications, as follows:

a 4297mm 2 10mm；

a 52 10mm 148mm；

a 6 144mm 105mm；

a3420mm297mm

Note: A3 size is not fixed, but it is widely used.

When we talk about A4 copy paper in our daily life, 8K paper refers to these sizes, that is, the size of A4 paper is 297mm2 10mm, and the size of 32K notebook is 21cm14.8cm.. ..

Paper size introduction:

A2 Paper size 594 mm 420 mm

A3 Paper size 420mm 297mm

A4 paper size 297mm210mm

B4 paper size

B5 paper size

8 paper size

Paper can be divided into newsprint, relief printing paper, offset paper, glossy paper, matt paper, bible paper, map paper, gravure paper, weekly newspaper, pictorial paper, whiteboard paper, writing paper and special paper.

Ordinary paper can be divided into 60gsm, 80gsm, 100gsm, 105gsm, 120gsm, 157gsm, 200gsm, 250gsm, 300gsm, 350gsm and 400gsm.

8 is 8, and the size is 390 x 270 mm If it is not in word, set it yourself.

Open it completely and put in 8 sheets of paper. Please measure it.

The specification of paper refers to the paper that has been cut and trimmed to a certain size. In the past, how many "opens" were used to indicate the size of the paper. Now I adopt international standards and stipulate A0, A 1, A2, B 1, B2, etc. Used to indicate the paper format specification. The ratio of length to width of standard paper is defined as x: y =1:n.

According to the basic area of paper format, the format specifications are divided into A series, B series and C series. A0 format size is 84 1mm? 189mm, width 1m2B0, width 1000mm? 4 14mm, with an area of 2.5m2C0, what is the width of 9 17mm? The format specification of 279mm copy paper with an area of 2.25m2 only adopts series A and series B. If A0 paper is divided into two equal parts along the length, it becomes A 1 specification. If A 1 paper is divided along the length, it becomes A2 specification, so it is divided into A8 specification; B8 paper is also cut into B8 specifications in this way. The width dimensions 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.

For example, the folding amount of quotA4 quot paper is four times that of type A basic size paper, so the area of A4quot paper is a quarter of that of basic paper, that is,116. The rest and so on.

I never thought about how big the size should be when I made the drawing 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. This picture is very effective, but it is blurred and ugly when printed on A4 paper. Today, I specially studied this problem, which is actually not difficult. The analysis is as follows:

The size of A4 paper is 2 10mm*297mm, that is, 2 1 .0cm * 29.7cm. When1inch =2.54cm and the resolution is 72pixels/inch, we convert it into 28.3pixels /cm. Now, when we convert it into a picture, the pixel is *

Similarly, we can get:

When the resolution is 300 pixels/inch, A4 size is 2479 * 3508;

When the resolution is 120 pixels/inch, the A4 size is 1487*2 105.

So if you want to print photos, you'd better convert them first, otherwise the picture quality is likely to decrease! Generally, it is best to use 300 pixels/inch for printed matter and 72 pixels/inch for printer or inkjet printing.

Heart of the King 2 Click on the demo.