Sizes of sheet formats A0 - A7. Formats and sizes of paper, application in printing industry, international standards How the A3 format is calculated
Almost every day we use paper for various purposes: when applying for a job, filling out a questionnaire, or simply signing a postcard to relatives. But not every one of us knows or even just thinks about what are the dimensions of the A6 format in centimeters, bytes or inches.
There are several systems for calculating the European ISO standards:
A. The area of the main sheet is almost 1m 2 .
B. The main page differs from A0 in that the width of paper B0 is 1m 2 .
C. The page area C0 is derived as the arithmetic mean of the parameters A0 and B0.
When compiling a leaflet in electronic or paper form, you need not only to know what size is A6, but also how much you need to step back from the edges of the page so as not to spoil the postcard when printed.
Almost all text editors set the borders of the sheet automatic mode, but if you need to change the original settings of the document or image, then specify the desired values in the printer settings before starting printing.
AT latest versions Microsoft office North American standards are used, which almost completely correspond to European ISO parameters.
popular name | ANSI classification | Aspect Ratio | Corresponding European format |
||
There are also Japanese standards. To calculate the size, a special system for calculations called JIS is used. To find out the A6 format and what is the size of the Japanese standard, we recommend that you familiarize yourself with the following table:
European format | Japanese format |
From this table you can find out what dimensions an A6 sheet has in mm in the Japanese standard system.
Japanese standards for A-series sheets are single to European sizes. As for series B, they will be a little more, 1.5 times.
How the A3 format is calculated
The calculation is based on the division of the main format A0 into several smaller parts. Thus, the following page dimensions can be calculated (all data are in millimeters):
A0 has parameters 841×1189.
A1. The length/width of the sides is 594×841.
A2. The length/width of the sides is 420×594.
A3. The length/width of the sides is 297×420.
A4. The length / width of the sides - 210 × 297.
A5. The length/width of the sides is 148×210.
A6. The length/width of the sides is 105×148.
A7. The length/width of the sides is 74×105.
A8. The length / width of the sides - 52 × 74.
A9. Side length/width 37×52.
The A6 page is obtained as a result of the waste-free division of the A5 sheet into two parts without residues. This technique allows you to save the aspect ratio of a document or image in different formats without distortion.
The size A6 paper is used in printing to create flyers, business cards, books, notepads and organizers etc. Programmers also use these parameters, only for them the size of the page is not as important as its size in bytes, megabytes or terabytes.
To determine the paper size A6 in electronic format you can use this table:
Format name | Size (mm) | grayscale 300dpi |
||
When working with an image, an important role is played by the number of pixels that correspond to the necessary parameters, and which A6 size in cm has when printed. Dimension table for A4, A5, A6 and A9:
|
International Standards
The dimensions of the frame for drawing A6 according to GOST are determined by the dimensions of the outer contour A0. As a basis for calculations, paper with parameters 1189x841 is used, the area of \u200b\u200bwhich is approximately 1m 2. According to the regulations, these data comply with the A0 standards.
GOST 2.301-68 establishes all acceptable standards for all kinds of drawings and documents in paper / electronic form, which are allowed by the rules for compiling and maintaining documentation in international formats. For example, the A6 format in cm will always have a dimension of 10.5 × 14.8.
We are all familiar with the A4 format. printed documents and electronic versions also adhere to this size. There are situations when it is necessary to know the exact dimensions of an A4 sheet in centimeters. This will help when building patterns, sending to print, in solving other everyday tasks for training or work.
Basic Paper Size Measurements
Currently, in various countries of the world and its individual regions, several systems are used that use different paper sizes. But the leading positions are occupied by: international, which takes the A4 format as a standard, and North American.
The paper size is set by the generally accepted standard for ISO formats - 216. It takes its roots in the metric system of measures and involves a number of series: A, B, C. For the A series, the A0 format, with an area of 1 m², is taken as the initial one. Further, to obtain the next A1 format, the outgoing A0 sheet is divided in half. And so on in that order. To get the next format, you need to divide the previous one by two.
A4 paper format is especially popular today. It is used for documents, teaching schoolchildren in the lessons of physics, drawing, geometry, as well as for other specialized subjects in colleges and universities. In addition, this format is used in industry and printing for specialized printing: catalogs, promotional items, letterheads and magazines. It is also convenient for beginner little artists, and is also useful for home use.
Knowing the dimensions of an A4 sheet in centimeters, you can quickly measure the required item without a ruler, build a graph or table. For technical documentation (drawings, diagrams or diagrams) can be used additional formats where the length or width is significantly larger than the original format. Format type B is used mainly in printing: posters, signs, posters, booklets, postcards. Format type C - these are envelopes intended for inserting a letter in A4 format.
In addition to these three main ones, there are other formats that are not described in the ISO - 216 standard. They are successfully used in other countries, for example, in Germany and the USA. They can be found when setting print options on the printer, for example: A4 Long, Extra, A3 Super, A4 Extra, F4, SO B5 and many others.
How many centimeters in an A4 sheet
The size of the A4 album sheet in centimeters is 21 x 29.7. Diagonally we get 36.4 centimeters. If we take other sheet formats for comparison, then A3 will be exactly twice as large as A4. Accordingly, if you fold an A4 sheet in half, we get an A5 sheet. A4 sheet sizes in centimeters can be useful for building patterns for sewing or charts.
How many pixels in an A4 sheet
We already know the dimensions of the A4 sheet in centimeters. Also, to work in the graphic editors Paint, CorelDraw or Photoshop, you may need to know the size of the A4 sheet in pixels. An image file represented in pixels will give you an idea of its height and width. At the used DPI resolution of 72, we get 845 x 595 pixels. Accordingly, 1754 x 1240 - at DPI 150, 3510 x 2480 - at DPI 300.
How many MB in an A4 sheet
It is important to know what the size of an A4 sheet is in centimeters, but it is equally useful to have an idea about the size of A4 in megabytes. So it’s immediately clear what size the picture is about. Such information is convenient for designers, illustrators and layout designers.
An A4 image using the CMYK color space at a DPI resolution of 300 weighs 33.2 MB. Accordingly, in the RGB or Lab color space at DPI 300 - 24.9 MB, in the Grayscale color space at DPI 300 it will be 8.3 MB.
In production, when producing paper for writing and printing, the ISO standard - 216 allows slight deviations in size according to the format:
- For sheets of paper with sides less than 150 mm, 1.5 mm is allowed.
- If the sides of the sheet are from 150 to 600 mm in size, an error of 2 mm is allowed.
- If the sides of the sheet are more than 600 mm, 3 mm is allowed.
As we can see, the larger the sheet size, the greater the error in paper release.
We are often asked: - "Can you print A4 photos?".
Of course, we can print photos in almost any size, but this question needs clarification.
Photo paper formats differ from international ISO formats, but most often in everyday life we operate with terms and sizes that are familiar to us, such as A4, drawing paper, etc. Although photo paper sizes and conventional sizes are quite close, they are still different from each other.
The main photo formats have an aspect ratio similar to the matrices of modern digital cameras 1:1.5 (2/3) or 1:1.33 (3/4). Standard international paper sizes have an aspect ratio of 1:1.4142, meaning they do not match in proportion. When printing on Noritsu minilabs, photo standards are used. Also, such familiar photo frames and photo albums for storing photos correspond to photo standards.
This table shows the ratio of photo formats that we print to standard paper.
| Photo format we print | Photo size in px | Photo size in mm | Aspect Ratio | ISO standard | ISO size in mm |
|---|---|---|---|---|---|
| 10x15 | 1217x1807 | 103x153 | 2:3 | ≈A6 | 105x148 |
| 15x21 | 1807x2492 | 153x211 | 3:4 | ≈А5 | 148x210 |
| 20x30 | 2409x3614 | 204x306 | 2:3 | ≈A4 | 210x297 |
| 30x40 | 3614x4972 | 306x421 | 3:4 | ≈А3 | 297x420 |
| 30x45 | 3614x5410 | 306x458 | 2:3 | ≈А3 | 297x420 |
| 30x60 | 3614x7217 | 306x611 | 1:2 | ≈А2 | 420x594 |
Now let's look at each of the photo formats in detail. The popular 10x15 format is 2 mm smaller on one side than the standard A6, and 5 mm larger on the other. Therefore, if you need exactly A6, you should order a photo 15x21 and cut off the excess manually.
Below you can see how the 10x15 format compares with the well-known A4.
A 15x21 photo will be slightly larger than an A5 sheet. On one side by 5 mm, on the other - by 1 mm. Therefore, if you need exactly A5, feel free to order a photo 15x21, cut off the excess.
Below you see the ratio of 15x21 to A4.
The 20x30 format is almost A4, but the photo is 6 mm smaller on one side and 9 mm larger on the other side than A4. 20x30 and A4 are disproportionate.
Below is the ratio of photo 20x30 to A4.
If you need A3, then choose a photo 30x40. 30x40 by 9 mm on one side and 1 mm on the other side more than A3. Calmly order and cut yourself =).
Below you see the ratio of 30x40 and A3.
Photo 30x45 is larger than A3. This can be seen in the picture below.
Photo 30x60 is difficult to compare with plain paper. 30x60 is much smaller than A2 (whatman paper) and much larger than A3. But this does not prevent 30x60 images from being popular among photo artists.
Below you see the ratio of the photo 30x60 to A3.
Below is the ratio of photo formats to each other.
| Format A | size, mm | Format B | size, mm | Format C | size, mm |
|---|---|---|---|---|---|
| A0 | 841х1189 | B0 | 1000x1414 | C0 | 1297x917 |
| A1 | 594x841 | IN 1 | 707х1000 | C1 | 917x648 |
| A2 | 420x594 | IN 2 | 500x707 | C2 | 648x458 |
| A3 | 297x420 | AT 3 | 353х500 | C3 | 458x324 |
| A4 | 210x297 | AT 4 | 250x353 | C4 | 324x229 |
| A5 | 148x210 | AT 5 | 176x250 | C5 | 229x162 |
| A6 | 105x148 | AT 6 | 125x176 | C6 | 162x114 |
| A7 | 74x105 | AT 7 | 88x125 | C7 | 114х81 |
| A8 | 52x74 | AT 8 | 62x88 | C8 | 57х81 |
| A9 | 37х52 | AT 9 | 44x62 | C9 | 40x57 |
| A10 | 26x37 | AT 10 O'CLOCK | 31х44 | C10 | 28x40 |
Paper size - a standardized size of a paper sheet. Different countries adopted different formats as standard at different times. Currently, two systems dominate: the international standard (A4 and related) and the North American.
The international standard for paper sizes, ISO 216, is based on the metric system and is based on a paper sheet size of 1 m² (Dimension A0). All ISO paper sizes have the same aspect ratio, equal to the square root of two, this ratio is approximately 1:1.4142. The standard has been adopted by all countries except the United States and Canada. In Mexico and the Philippines, despite the adoption of an international standard, the American "Letter" format is still widely used.
It consists of three series of formats (with similar sizes for the same numbers):
- A - an area of \u200b\u200b1 m² is taken as the base for the maximum sheet of the series.
- B - a length of 1 m is taken as the base for the short side of the maximum sheet of the series.
- C - formats of envelopes for sheets of series A (sizes are larger by about 9%).
The area and dimensions of the sides of the B format is the geometric mean between the corresponding parameters of the adjacent formats A, and the area and dimensions of the sides of the C format are the geometric mean between the corresponding adjacent formats B and A.
The most widely known ISO format is the A4 format. In Russia, for technical documentation (drawings, diagrams, texts, diagrams), formats from A4 to A1 (with folding rules up to A4 for storage) are standardized. The A3 format is the second most used, after A2, standard newspaper size.
In addition, for technical documents, formats with a large aspect ratio are used, formed by repeatedly applying one of the standard formats along the long side of the sheet. For example, for series A, the following additional formats can be formed:
| A0 841х1189 mm |
A0x2 1682x1189 mm |
A0x3 2523х1189 mm |
A0x4 3364х1189 mm |
A0x5 4204х1189 mm |
A0x6 5045x1189 mm |
| A1 594х841 mm |
А1х3 1784x841 mm |
А1х4 2378х841 mm |
А1х5 2973х841 mm |
А1х6 3568х841 mm |
|
| A2 420x594 mm |
А2х3 1261x594 mm |
А2х4 1682x594 mm |
А2х5 2102x594mm |
А2х6 2523х594 mm |
|
| A3 297х420 mm |
A3x3 892х420 mm |
A3x4 1189x420 mm |
A3x5 1487х420 mm |
A3x6 1784x420 mm |
|
| A4 210x297 mm |
А4х3 631х297 mm |
A4x4 841х297 mm |
А4х5 1051x297 mm |
A4x6 1261x297 mm |
|
| A5 148x210 mm |
A5x3 446x210 mm |
A5x4 595x210 mm |
A5x5 743x210 mm |
A5x6 892х210 mm |
Most of the standard printing products are printed in standard formats: A6, A5, A4, A3, A2, DL "Euroformat" - 99x210 mm (1/3 A4) or in sizes that fit comfortably on the sheet format.
This is understandable, the minimum amount of paper "waste" during printing is beneficial to everyone: manufacturers of printing equipment, paper manufacturers, printing houses and printing centers. Therefore, when developing a layout, this moment must be taken into account.
If you offer a printing house to print a non-formatted product, most likely you will have to overpay for paper that ends up in the trash, and at best for recycling. This mainly applies to papers that are designed for digital and offset printing. But, for example, designer cardboards and papers in most cases have a size of 700x1000 mm (approximately B1 format 707x1000mm). When printing on such papers, you need to be more careful about the size of the product, since the cost of such materials is orders of magnitude higher.
I will try to be as brief but informative as possible. print sheet format Serie A, as one of the main in the world. Understanding the difference in sizes will make it much easier for you to communicate with printer managers.
Paper size table (dimensions in mm), ISO 216
| A6- 105x148 | A2- 420x594 |
| A5- 148x210 | A1- 594x841 |
| A4- 210x297 | A0- 841x1189 |
| A3- 297x420 |
Paper size table (dimensions in cm)
| A6- 10.5x14.8 | A2- 42x59.4 |
| A5- 14.8x21 | A1- 59.4x84.1 |
| A4- 21x29.7 | A0- 84.1x118.9 |
| A3- 29.7x42 |
SRA3 sheet format
Mostly, digital printing presses have the main print sheet size SRA3- 320x450 mm. Maximum and optimally, this size will include such products (taking into account the bleed 2mm per side)
