C.R. Gibson Black Bound Journal and Notebook, 224 Pages, 6'' W x 8.25'' H

A4, B5, A5—no, you haven’t wandered into a bingo game. These are actually some of the most commonly used paper sizes in the world. In this video, we’ll be explaining international paper sizes and our favorite notebooks to use for each size. In North America, we usually use letter size. However, most countries use paper sizes that fall into one of two Series: the A Series and the B Series. Let’s start with the A Series. The largest size is A0. To get the next size down, just cut the first size in half. Now you have A1. Cut that one in half, and you get A2, and so on and so forth. Due to the paper’s aspect ratio of one to the square root of two, it’s able to keep the same proportions each time it’s cut in half. The standard paper size in most countries is A4, which is the closest to our letter size. It is slightly longer and narrower than Letter size. The B Series follows the same princip