A0 Paper Size
Starting with the biggest internationally recognised paper size in the A-series is A0. A0 is a paper size that is typically used for technical drawings and posters. Folding an A0 along its shortest side will create an A1 document. Folding in a similar fashion once more will create an A2 sized document. This method of folding can be continued all the way through to A10.
A0 Paper Size in mm: 841 x 1189
A0 Paper Size in cm: 84.1 x 118.9
A0 Paper Size in Inches: 33.1 x 46.8
A1 Paper Size
Typically, the A1 paper size is used for technical drawings, flip charts and posters. This large document requires a certain minimum resolution needed to print on. At 300 ppi (pixels per inch) the image will need to be 7016 x 9933 pixels. A decent digital camera with a resolution of 20 megapixels or more should be used to print high-quality pictures at an A1 size. Fewer megapixels could be used for images that will be viewed at a distance (such as posters).
A1 Paper Size in mm: 594 x 841
A1 Paper Size in cm: 59.4 x 84.1
A1 Paper Size in Inches: 23.4 x 33.1
A2 Paper Size
The A2 paper size is quite versatile and is often used for medium size posters, architectural drawings, diagrams and large wall calendars. A camera of at least 16 megapixels is recommended to print high-quality A2 size pictures.
A2 Paper Size in mm: 420 x 594
A2 Paper Size in cm: 42 x 59.4
A2 Paper Size in Inches: 16.5 x 23.4
A3 Paper Size
A3 is a very common size of A-series paper and is typically used for drawings, diagrams, photos, magazines, certificates and more. It's also a very common size to use for promotional leaflets (folded 6 ways). A camera of at least 12 megapixels is recommended to print high-quality A3 size pictures.
A3 Paper Size in mm: 297 x 420
A3 Paper Size in cm: 29.7 x 42
A3 Paper Size in Inches: 11.7 x 16.5
A4 Paper Size
A4 is the most common size paper used in the UK. It's used for a wide range of documents such as magazines, catalogues, letters and forms. All standard office printers will use A4 size paper. A camera of at least 8 megapixels is recommended to print high-quality A4 size pictures.
A4 Paper Size in mm: 210 x 297
A4 Paper Size in cm: 21 x 29.7
A4 Paper Size in Inches: 8.3 x 11.7
A5 Paper Size
A5 size paper is widely used for such items as notepads, pocketbooks or flyers. A size that is also regularly used in the UK. A camera of at least 4 megapixels or more is recommended to print high-quality A5 size pictures.
A5 Paper Size in mm: 148 x 210
A5 Paper Size in cm: 14.8 x 21
A5 Paper Size in Inches: 5.8 x 8.3
A6 Paper Size
A6 is a size you will still be familiar with as this size is often used for postcards and small pocketbooks. A camera of at least 2 megapixels is recommended to print high-quality A6 size pictures.
A6 Paper Size in mm: 105 x 148
A6 Paper Size in cm: 10.5 x 14.8
A6 Paper Size in Inches: 4.1 x 5.8
A7 Paper Size
A7 is a paper size typically used for large-size post-it notes or mini calendars with timetables for such things as gyms or schools. A camera of at least 1 megapixel will be required to print high-quality A7 size pictures.
A7 Paper Size in mm: 74 x 105
A7 Paper Size in cm: 7.4 x 10.5
A7 Paper Size in Inches: 2 x 2.9
A8 Paper Size
A very familiar paper size as A8 is often used for business cards, bank cards and driving licences. A8-sized documents are often printed in bulk as you can fit 16 A8-sized images on an A4 piece of paper. A camera of at least 1 megapixel will be required to print high-quality A8 size pictures.
A8 Paper Size in mm: 52 x 74
A8 Paper Size in cm: 5.2 x 7.4
A8 Paper Size in Inches: 2 x 2.9
