for Paper Sizes! Bookmark this site, it may come in handy.
Click on the purple words 'paper sizes'
A handy new website called PaperSizeReference.com instantly displays paper sizes and even visually compares sizes with one another. It’s a convenient resource for graphic designers, crafters, companies that do business internationally, and so on. Just choose a paper size from the drop-down menu and see the size overlaid on a letter-size sheet.
The site also displays the standard and dimensions of the width and height in both millimeters and inches. The standards include American National Standards Institute (ANSI), Architects Standard (Arch), International Organization for Standardization (ISO), United Kingdom (UK), and United States (US).
For example, if you choose A5 paper, you’ll see that it’s ISO standard and its dimensions are 148mm by 210 mm or 5.8 inches by 8.3 inches. Then, click to compare A5 paper to any of the dozens of paper sizes covered at the site.
PaperSizeReference.com felt like a natural to me, because ofPrintablePaper.net,PrintablePlanners.net, and my other printables sites. I hope you find it useful.