A One-Stop Guide to Every Paper Size You’d Need to Know About

Saikat Basu 12-10-2017

Paper sizes matter, and choosing the right paper size isn’t only about money.


Think of paper sizes as the “frame” for your message. Everything from printed index cards How to Make Index Cards in Microsoft Word 2016 Index cards are one of the best information organizing tools and memory aids because of their simplicity. Design your own with Microsoft Word and these tips. Read More  to billboards need their own specific paper sizes. And if you’re a photographer or designer, then you need to know about different sizing options and the benefits of each size.

Paper sizes also differ across the world. If you’re in the U.S., you might choose Letter size while someone in Europe might opt for A4, and they aren’t exactly the same.

Find the International Standard for Paper Sizes

A readily accessible index of standard paper sizes used across the world helps to keep the printers happy — and remove any confusion.

PaperSizes is a useful site with quick access to almost all sizing standards used today. The neat and clean resource lists dimensions of over 250 international paper sizes in both mm and inches.


In most situations, you will follow the ISO 216 series of paper sizes that are now accepted globally. But you will also notice from this Wikipedia page that the standard isn’t followed by Canada, the United States, Mexico, or the Dominican Republic. can help you find the right size and, if necessary, scale it up (or down) to the accepted paper size in the above countries.

Interesting Tip: The ISO Standard paper sizes have neat mathematical ratios. This also makes it a breeze to scale them up or down. So says the site itself:

“Cutting an A4 in half will create two A5 sheets, and so forth. Any size of brochure can be made using paper from the next larger size, for example, A3 sheets are folded to make A4 brochures.”

Want to scale an A-size page to the next bigger size? Enlarge it by 141 percent for the perfect fit. This ease is lacking in U.S. paper sizes, unfortunately.

Does the difference between paper sizes frustrate you at every corner? What do you think about

Image Credit: Nuk2013 via Shutterstock

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