International Paper Sizes.

Many printing companies, and individuals want to be able to check standard paper sizes easily.

We have added a convenient chart for you to check paper sizes.

The International paper size standard, ISO 216, is based on the metric system, with the base format being a sheet of paper measuring 1m² in area.

By 1977 A4 was the standard letter format in 88 of 148 countries, and today only the U.S. and Canada have not adopted the system.

The largest standard size, A0, has an area of 1m². The long side of the sheet is calculated by taking the 4th root of 2, approximately 1.189, and the short side is the inverse of that number, approximately 0.841, and multiplying by one metre. A1 is formed by cutting a piece of A0 in half, which retains the aspect ratio. This particular measurement system was chosen in order to allow folding of one standard size into another, which cannot be accomplished with traditional paper sizes.

Brochures are made by using material at the next size up i.e. material at A3 is folded to make A4 brochures. Similarly, material at A4 is folded to make A5 brochures.

It also allows scaling without loss of image from one size to another. Thus an A4 page can be enlarged to A3 and retain the exact proportions of the original document.

The scalability also means that less paper (and hence money) is wasted by printing companies.

Grammage(Weight)

Throughout the world, except in regions using US paper sizes, the product of thickness and density of paper is expressed in grams per square metre (g/m²). This quantity is commonly called grammage in both English and French (ISO 536), though printers in most English-speaking countries still refer to the "weight" of paper, i.e. 80 gsm.

Typical office paper has a grammage of 80 g/m², therefore a typical A4 sheet (1/16 m²) weighs 5g.

The unofficial unit symbol "gsm" instead of the official "g/m²" is also occasionally encountered in English speaking countries.

While paper is measured by weight, card is measured by thickness in micrometres.

 

Common Paper Sizes

Paper Size Width (mm) Height (mm)
A0 841 1189
A1 594 841
A2 420 594
A3 297 420
A4 210 297
A5 148 210
A6 105 148
A7 74 105
A8 52 74
1/3 A4 99 210
1/4 A4 74 210
Business Card 85 55

All Sizes

A series
Paper Size Width (mm) Height (mm)
4A0 1682 2378
2A0 1189 1682
A0 841 1189
A1 594 841
A2 420 594
A3 297 420
A4 210 297
A5 148 210
A6 105 148
A7 74 105
A8 37 52
A9 99 210
A10 26 37
B series
Paper Size Width (mm) Height (mm)
B0 1000 1414
B1 707 1000
B2 500 707
B3 353 500
B4 250 353
B5 176 250
B6 125 176
B7 88 125
B8 62 88
B9 44 62
B10 31 44
C series
Paper Size Width (mm) Height (mm)
C0 917 1297
C1 648 917
C2 458 648
C3 324 458
C4 229 324
C5 162 229
C6 114 162
C7 81 114
C8 57 81
C9 40 57
C10 28 40