RNB Group Paper Size Guide

Different paper sizes and their many uses

Different paper sizes and their many usesPaper has so many different uses and there’s a size for every project

If you work in print marketing or any sort of marketing for that matter, we’d always recommend getting clued up on different paper sizes and formats you’ll potentially encounter.

In this guide we’re going to focus on ‘A’ and ‘B’ paper sizes.

Read on for our paper size charts and a breakdown of how each paper size is typically used.

A Paper Sizes

Let’s start with the most globally recognised paper size convention, A.

Formally adopted in Europe way back in the 19th century, the ‘A’ paper size system has since spread across the world. Aside from the USA and Canada, nearly every country uses this system now and it’s the most common standard business letter size used in English speaking countries.

You only have to glance at your home or office printer and you’ll most likely see A4 paper poking out of it. It’s the paper size most commonly known and used for everyday printing.

But there many more options available for print within the ‘A’ paper series, which goes from A0 through to A10.

Our charts below gives you a visual of the different A sizes available but, we’ve also provided a summary on how each paper size tends to be used.

 A paper sizes

A0 paper uses

The largest standardised paper size in the A range, A0 comes in at over 1 metre in height. That’s the equivalent of 16 A4 sheets of paper. This size is typically used for large signs or posters.

A1 paper uses

Like A0, A1 is typically used for signs, posters and window displays.

A2 paper uses

A2 is used for posters, notices, window displays and art prints.

A3 paper uses

A3 tends to be used for presentations, charts, posters and plans.

A4 paper uses

A4 is the most recognised ‘A’ paper size and is commonly used for everyday printing. A4 tends to be used to print business stationery letterheads.

A5 paper uses

A5 has many uses. This size is a popular choice for diaries & planners, books, invitations, flyers, booklets and more.

A6 paper uses

A6 paper is typically used for postcards, flyers, leaflets and save the dates

A7 paper uses

A7 tends to be used for large Post-it notes. It can also be practical for tickets, since you can print 8 of them on an A4 sheet.

A8 paper uses

A8 is the most popular size for business cards

A9 paper uses

A9 tends to be used for vouchers and tickets.

A10 paper uses

Being the smallest of the standardised A sizes, A10 is only ever really used for stamps or small vouchers.


B Papers Sizes

In addition to A sizes, naturally we have, (yes you guessed it) the B series. This paper series was introduced to provide a wider range of options.

We’ll mention at this point that there is also a C series which is a set of envelope sizes. We’re not going to include the C series in this article but we have a handy guide to envelope sizes right here.

The B series is that little bit bigger than it’s A counterpart. Again, we’ve given a quick overview of how each size is typically used.

B paper sizes follow the same pattern as A with B0 being the largest and dropping in size by half as you go from B0 to B10.

B aper sizes


B0 paper uses

This size is typically used for posters and enlarged photos.

B1 paper uses

B1 again tends to be used for posters and signs.

B2 paper uses

B2 is perfect for small posters.

B3 paper uses

This size is typically used for smaller posters and paintings.

B4 paper uses

B4 works well for little posters and notes.

B5 paper uses

B5 is a popular choice for menus, magazines and advertising flyers.

B6 paper uses

B6 tends to be used for booklets and flyers.

B7 paper uses

Small notebooks, menus and flyers – B7 is a good choice for these.

B8 paper uses

This size tends to be used for flyers and business cards.

B9 paper uses

One of the smallest B sizes, ideal for labels and small flyers.

B10 paper uses

The smallest B size is mainly used for vouchers and small cards.


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Paper size charts

PS. we’ve popped these handy tables below to give you a breakdown of each paper size and its dimensions in millimetres, centimetres and inches.

‘A’ paper size summary

‘A’ paper sizes Size (mm)Size (cm)Size (inches)Typical uses
A0841 x 118984.1 x 118.923.4 x 33.1Posters

Wall Notices

Art & Design Visuals

CAD Drawings

Architectural Plans

Exhibition Graphics

Window Displays

A1594 x 84159.4 x 84.123.4 x 33.1Posters

Wall Notices

Art & Design Visuals

CAD Drawings

Architectural Plans

Exhibition Graphics

Window Displays

A2420 x 59442 x 59.416.5 x 23.4Posters

Wall Notices

Art & Design Visuals

CAD Drawings

Architectural Plans

Exhibition Graphics

Window Displays

A3297 x 42029.7 x 4211.7 x 16.5Posters

Wall Notices

Art & Design Visuals

CAD Drawings

Architectural Plans

A4210 x 29721 x 29.78.3 x 11.7Letterheads



Text Books



Training Manuals




Large Event Programmes

A5148 x 21014.8 x 215.8 x 8.3Diaries & planners


Small forms





Event Programmes

A6105 x 14810.5 x 14.84.1 x 5.8Postcards





Save the dates

A774 x 1057.4 x 10.52.9 x 4.1Large Post-it notes


A852 x 745.2 x 7.42.0 x 2.9Business cards
A937 x 523.7 x 5.21.5 x 2.0Vouchers


A1026 x 372.6 x 3.71.0 x 1.5Stamps

Small vouchers

‘B’ paper size summary

B Paper SizesSize (mm)Size (cm)Size (inches)Typical uses
B01000 x 1414100 x 141.439.4 x 55.7Posters

Enlarged photos or text

B1707 x 100070.7 x 10027.8 x 39.4Posters

Enlarged photos or text

B2500 x 70750 x 70.719.7 x 27.8Small posters
B3353 x 50035.3 x 5013.9 x 19.7Small posters


B4250 x 35325 x 35.39.8 x 13.9Little posters


B5176 x 25017.6 x 256.9 x 9.8Menus


Advertising flyers

B6125 x 17612.5 x 17.64.9 x 6.9Booklets


B788 x 1258.8 x 12.53.5 x 4.9Small notebooks



B862 x 886.2 x 8.82.4 x 3.5Flyers

Business cards

B944 x 624.4 x 6.21.7 x 2.4Flyers


B1031 x 443.1 x 4.41.2 x 1.7Vouchers

Small cards



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