Most Commonly Used Poster Sizes

What are the Most Commonly Used Poster Sizes?



Most poster sizes commonly used are from the A series paper sizes, defined by the ISO 216 standard.

The poster sizes are A4, A3, A2, A1 and A0. Since we are referring to poster sizes, we begin from A4 size, but in the A series, there are smaller sizes available. A5 and A6 (which is the normal size for postcards).

A4 is the size of our normal office printing paper, measuring 21cm width x 29.7cm height.

You will find that each subsequent size is twice the size of the previous size.

For example, A3 is twice the size of A4, A2 is twice the size of A3, and so on.

Commonly used poster sizes like A0, A1, A2, A3 and A4.

Commonly used poster sizes like A0, A1, A2, A3 and A4.


Most Commonly Used Poster Sizes

A4 = 21cm x 29.7cm

A3 = 29.7cm x 42cm

A2 = 42cm x 59.4cm

A1 = 59.4cm x 84cm

A0 = 84cm x 118.8cm


A1 Poster Sizes: Foamboard Mounted for Republic Polytechnic



There is also the B series paper sizes,

It’s not as commonly used as the A series, but you find the poster sizes being used for IKEA poster frames and more.

B4 = 25cm x 35.3cm

B3 = 35.3cm x 50cm

B2 = 50cm x 70.7cm

B1 = 70.7cm x 100cm

B0 = 100cm x 141cm



These are the most common sizes of posters that designers and design clients will usually stick to, but frankly, there is no restriction or limitation to the size or shape of the poster which you can create.

You might also find this useful: How Do I Prepare a Poster for Printing?

We have had experience printing many different custom sizes and shapes. For posters with a custom shape, diecut to an irregular shape, we can do them too.




Posters can also be made to lifesize standees, which can be propped up with an aluminium easel attached to its back. This is also commonly used, and we have made a few for customers. Most memorable are the ones made for wedding reception, where the wedding couple are printed out as a poster made into a lifesize standee.


poster foamboard standee


For more information on printing posters, please refer to our Poster Printing and Frames page


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