Paper and also notebook sizes room an regrettably confusing thing. You simply want part printer document or a brand-new notebook, and instead you are choosing between “A4” and “B5” and a slew of various other unhelpful options. Perhaps you are much better off switching to numbers, favor “8.5 by 11,” however we’ve all made the mistake of bespeak legal document when we supposed to obtain normal copy paper.

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This guide should help you type out every your loosened leaf file and notebook dimension problems.


Paper size Standards

A4, A6, and so on are not sizes that were arrived a randomly, they space the result of ISO typical 216. ISO 216 defines document sizes in the “A” and “B” collection with ISO 217 and ISO 269 (specifically the “C” series) standards taking care of related products, choose envelopes.


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An A4 desk pad

ISO vs. US

In the United claims it’s common to check out sizes like A4, but document is an ext commonly referred to as “Letter,” “Legal,” “Memo” or terms like that. This is because the us is based upon ANSI (American nationwide Standards Institute) standards, i m sorry are various from ISO (an international standard). Names favor “letter size” space actually no the official names, but rather shorthand for the ANSI name.

The primary paper sizes in the US conventional are:

Legal: 8 1/2 x 14 inches / 216 x 356 mmLetter (ANSI A): 8 1/2 x 12 2/3 inches / 216 x 322 mmGovernment Letter: 8 x 10 inch / 203 x 254 mm

The specific standard below is well-known as ANSI/ASME Y14.1 if you want to do much more research. Regrettably this document isn’t free, for this reason it i will not ~ be available or valuable for everyone to use.

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Courtesy Wikipedia

Understanding record Size Naming

The paper and notebook names us are fairly simple: you have actually a series name and then a dimension name. In the ISO standard these incorporate to do “A4” or “B6”. The an obstacle here is psychic what those sizes mean and also how big they are family member to one another.

The many important dominance to remember is that the sizes space in train station order, so size 0 record is bigger than size 5!

The ISO size are concerned one another, though it might not automatically be clean how. They usage an element ratio that √2:1. This allows for a fifty percent sheet to have actually the same facet ratio of the original, which means a solitary sheet deserve to be bound and folded in half, maintaining the calls for width to size ratio.

Importantly, the height-to-width ratio of all pages is √2 (basically a proportion of 1.41:1).

Note just how the sizes are reused: one A0 paper is 841 mm broad and one A1 sheet is 841 mm tall. This way two that a little sizer deserve to be rotated and put side-by-side to an excellent the following size up.

A Series record Sizes

The many common document sizes are part of the “A” format, i m sorry contains frequently referred to species of loosened paper, like “printer paper” and also “legal paper.” these names are often shorthand the are offered to refer to standard sizes, yet they can also refer to ANSI sizes, for this reason you have to be mindful what friend ask for!

A0: 841 x 1189 mm (33 1/8 x 46 19/24 inches)A1: 594 x 841 mm (23 3/8 x 33 1/8 inches)A2: 420 x 594 mm (16 13/24 x 23 3/8 inches)A3: 297 x 420 mm (11 17/24 x 16 13/24 inches)A4: 210 x 297 mm (8 1/4 x 11 17/24 inches)A5: 148 x 210 mm (5 5/6 x 8 1/4 inches)A6: 105 x 148 mm (4 1/8 x 5 5/6 inches)A7: 74 x 105 mm (2 11/12 x 4 1/8 inches)A8: 52 x 74 mm (2 1/24 x 2 11/12 inches)A9: 37 x 52 mm (1 11/24 x 2 1/24 inches)A10: 26 x 37 mm (1 1/24 x 1 11/24 inches)

A advantageous tip is that as you understand up in number v the A family, the paper size halves. This way a notebook that is dimension A5 is about half the size of one A4 sheet!

B Series paper Sizes

These are paper sizes that are various from A collection sizes, yet not necessarily smaller sized or larger. B sizes can just seem favor weird sizes, but they deserve to be quite beneficial if friend can acquire your head about the range.

B sizes room √2 times higher in full area than the identical A size.

B0: 1000 x 1414 mm (39 3/8 x 55 2/3 inches)B1: 707 x 1000 mm (27 5/6 x 39 3/8 inches)B2: 500 x 707 mm (19 2/3 x 27 5/6 inches)B3: 353 x 500 mm (13 11/12 x 19 2/3 inches)B4: 250 x 353 mm (9 5/6 x 13 11/12 inches)B5: 176 x 250 mm (6 11/12 x 9 5/6 inches)B6: 125 x 176 mm (4 11/12 x 6 11/12 inches)B7: 88 x 125 mm (3 11/24 x 4 11/12 inches)B8: 62 x 88 mm (2 11/24 x 3 11/24 inches)B9: 44 x 62 mm (1 3/4 x 2 11/24 inches)B10: 31 x 44 mm (1 5/24 x 1 3/4 inches)

C Series paper Sizes

These are the ISO criter for envelopes and other related document products. Lock are similar to the A format but slightly bigger in size.

C0: 917 x 1297 mm / 36 1⁄12 x 51 1⁄12 inchesC1: 648 x 917 mm / 25 1⁄2 x 36 1⁄12 inchesC2: 458 x 648 mm / 18 1⁄24 x 25 1⁄2 inchesC3: 324 x 458 mm / 12 3⁄4 x 18 1⁄24 inchesC4: 229 x 324 mm / 9 x 12 3⁄4 inchesC5: 162 x 229 mm / 6 3⁄8 x 9 inchesC6: 114 x 162 mm / 4 1⁄2 x 6 3⁄8 inchesC7: 81 x 114 mm / 3 5⁄24 x 4 1⁄2 inchesC8: 57 x 81 mm / 2 1⁄4 x 3 5⁄24 inchesC9: 40 x 57 mm / 1 7⁄12 x 2 1⁄4 inchesC10: 28 x 40 mm / 1 1⁄12 x 1 7⁄12 inches

Other document Sizes

Keep in mind that there are many other document sizes. First of all, document doesn’t have to adhere come a standard at all! file and notebook devices are totally free to create assets that are any size they want. The said, it can be prohibitively expensive come create record in tradition sizes and it deserve to be difficult to do at scale.

There are additionally standard sizes that are rather rare. These include huge sizes favor 4A0, i beg your pardon is an enormous 1682 x 2378 mm (about 5 through 7 feet), and 2A0 i beg your pardon is 1189 x 1682 mm.

There are other sizes that space variants top top the mainline sizes. These come in sizes like “A4 extra” (235 x 322 mm / 9.25 x 12.67 inches) and “A4 Super” (229 x 322 mm / 9.25 x 12.67 inches). So, as you could have suspected, there is an endless array of paper sizes.

Notebooks Sizes

While notebooks show up as tradition sizes much an ext often 보다 loose document does, plenty of do adhere to the standard sizes stated above. Because that example, virtually all Japanese notebooks are sold in typical dimensions, like the Midori A4 desk pad or the Midori A5 notebook. You will typically see newspaper (like those provided for cartridge journaling) in A5 or B5 sizes.

While A sizes are typical in the US, you’ll view B sizes much an ext often in Japan and also South Korean. This doesn’t do a significant difference come buyers as the A and B sizes overlap through one another, however you might have a choice for, say, a B5 end the slightly larger A4.

This could seem obvious, yet it’s worth making clear: notebook sizes room the same as file sizes. This way an A4 notebook will certainly basically be sheets of A4 paper that room bound together.

Moleskine Notebook Sizes

Not every firm feels the must adhere to typical sizes, Moleskine in particular. Below are handy reference sizes for Moleskine Cahier journals and also Classic notebooks:

Moleskine Extra Small: 6.5 x 10.5 cm / 2.5 x 4.3 inchesMoleskine Pocket: 9 x 14 cm / 3.5 x 5.5 inchesMoleskine Large: 13 x 21 centimeter / 5.1 x 8.4 inchesMoleskine Extra Large: 19 x 25 cm / 7.5 x 9.8 inchesMoleskine A4: 21 x 30 cm / 8.3 x 11.7 inches

Rhodia Notebook Sizes

The renowned Rhodia notebooks also use tradition sizing that can be a little bit confusing. Here are the firm Pad sizes…

Pad 8: 7.4 x 21 cm / 3.0 x 8.3 inchesPad 10: 5.2 x 7.5 centimeter / 2.0 x 3.0 inchesPad 11 (A7): 7.4 x 10.5 centimeter / 2.9 x 4.1 inchesPad 12: 8.5 x 12 cm / 3.4 x 4.7 inchesPad 13 (A6): 10.5 x 14.8 cm / 4.1 x 5.8 inchesPad 16 (A5): 14.8 x 21 cm / 5.8 x 8.3 inchesPad 18 (A4): 21 x 29.7 centimeter / 8.3 x 11.7 inchesPad 19 (A4+): 21 x 31.8 centimeter / 8.3 x 12.5 inchesPad 38 (A3+): 42 x 31.8 cm / 16.5 x 12.5 inches

Once you move the period Pad, sidebound notebook, R through Rhodia, or various other lines there are additional size specifications.

Frequently asked Questions

What is a conventional printer file size?

Standard printer paper in the joined State and Canada is referred to as “letter” paper as per the ANSI standard. It’s sized at 8.5 x 11 inches. Various other parts the the human being use A4 as their traditional printer paper, i m sorry is 210 x 297 mm (8 1⁄4 x 11 17⁄24 inches).

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What is a conventional envelop size?

Normal north American business envelopes are size #10. They measure up 4 1/8 by 9 1/2 inches.