A Paper sizes & Printing Dimensions Guide

When you’re printing out standard documents on an at-home printer, you don’t normally need to think too much about the size – they’re usually single sheets of A4. However, if you’re printing something a different size – or are printing specific marketing or advertising material, you may need to use a different size.

Did you know that there are actually nine different ‘A’ series paper sizes? Not too many people would be able to list off how big each size is. So, we’ve put together a handy guide to make life easier for you.

Size and aspect ratio guide for A series paper sizes

Below are A0 – A8 paper sizes to the nearest millimetre, centimetre, inch and their aspect ratio.

A0 – 841 mm X 1189 mm – 84.1cm x 118.9cm – 33.11 inch x 46.81 inch – (aspect ratio)  (1.414:1).

A1 – 594 mm X 841 mm – 59.4cm x 84.1cm – 23.39 inch x 33.11 inch – (1.414:1).

A2 – 420 mm X 594 mm – 42m x 59.4cm – 15.52 inch x 23.39 inch -1:1.41.

A3 – 297 mm X 420 mm – 29.7cm x 42cm- 11.69nch x 15.52 inch – 1:1.41.

A4 – 210 mm X 297 mm – 21cm x 29.7cm – 8.26 inch x 11.69 inh -1:1.41.

A5 – 148mm X 210 mm – 14.8cm x 21cm – 5.82 inch x 8.26 inch – 1:1.41.

A6 – 105 mm X 148 mm – 10.5cm x 14.8cm – 4.13 inch x 5.82 inch – 1:1.41.

A7 – 74 mm  X 105 mm – 7.4cm x 10.5cm – 2.91 inch x 4.13 inch – 1:1.41.

A8 – 52 mm  X 74 mm – 5.2cm x 7.4cm -2.04 inch x 2.91 inch – 1:1.41.

Popular paper sizes & printing formats

Everyone knows that A4 is the most popular paper size- it’s used commonly for all different kinds of content, material and reasons. However, A4 doesn’t work for everything – especially for more professional-looking content that is being used for a particular reason, like an event invitation or a flyer.

While A4 paper size may be good for business letterheads, if you received an advertising flyer in your inbox that was printed on standard A4 series paper, you may think it looks pretty amateur. This is where different paper sizes and paper formats come into play. For example, professional flyers generally use A6 series paper size, this size is equivalent to a quarter of an A4, so it’s a lot easier and cheaper to mail out and is also is a good size for a receiver to stick on a fridge.

A series paper sizes and B series paper sizes are used across the world and the term ISO standard actually describes the international standard of paper size that’s used in most countries that use the metric system.

However, it’s important to note that ‘A’ series paper sizes are certainly not a one-size-fits-all format. Sometimes a product will require a paper size that’s outside of the ‘A’ series paper size range. If this is the case, you can check out our guide on DL sizes, b series paper sizes, or we can make a custom sized product for you.

Below we go into detail about what sized products are best printed on what paper sizes.

Common products we print in different sizes


A flyer is used as advertising or as a marketing product to get eyes on a good or service. Flyers are often distributed to people’s letterboxes or handed out at public places. Flyers usually come in huge stacks, so when it comes to production costs, small flyers will work out much cheaper than printing a bigger size.

At Space Print we can print your custom-designed artwork or content onto a flyer of your choice. We use quality 150 GSM paper and you’ll have the option for a matte or gloss finish, and to print your flyer single or double-sided. In regards to sizing, we have a few options available A4 flyer size, A5 flyer size and A6 flyer size series paper sizes, but we can also print flyers in other paper sizes.


Brochures are actually printed on A4 sized paper, but because of their tri-fold, it does tend to look different from your typical A4 size. Brochures are usually folded into three sections horizontally and are used to sell a product or service.

Through the use of the trifold and photos through the brochure, the text is broken up and is easier to read. When ordering a brochure at Space Print you can easily upload your artwork and have a stack of your brand new brochures in your hands within 3-4 business days.


When handling a postcard, one of the first things you’ll probably notice is the thickness of the card. Postcards are generally made on 350GSM card, giving off a sleek and upscale feel. They are often used as invitation cards or as promotional material.

At Space print, we have the option for either single or double-sided printing, as well as whether you’d prefer matte or gloss card. Postcards usually come in A6 size. To purchase your own stack of postcards, follow the link here.


Letterheads are used in almost every successful business. They are essentially a logo, and some contact details that line the header and the footer of the page, and the a4 page can be run through a normal printer. A well-designed letterhead will make a formal document look more professional.

Letterheads are generally printed on A4 paper formats, this makes it easy for the letterhead to be loaded in a normal printer to print a document of the same size.


Booklets can be used as sleek and luxe-looking marketing material. They can be a catalogue showcasing different products. At Space Print we print the booklets in full colour, using high-quality materials, like matt or gloss 150GSM paper.

With Booklets, our customers typically go for one of two options; A4 booklets or A5 booklets, however, we may be able to print booklets in other paper sizes.

Presentation folders

Presentation folders are pockets used to hold important documents together. They usually have the business’s name and log printed on them, and project a look of professionalism. We offer a range of different templates for presentation folders, so you can personalise one to meet your own needs. Alternatively, it’s also possible to complete upload your own file.

At Space Print we print presentation folders on either matte or glossy A4 350 GSM paper.

While we typically print in sizes ranging from A4 to A6 (these are the most common sizes), we do have the ability to print in other sizes and can adjust orders to suit customer needs. Please get in touch with our customer support team for more details on this, or if you need help with your order.