Binder Sizes Guide

We've written many articles about journaling tools information, including Notebook Sizes Guide introducing the exact sizes of different notebook, and Notebook Paper Guide introducing different inner pages designs. Today, we are going to introduce the difference between binder sizes.
Leather binders are very popular because of the replaceable inner pages. You can even DIY the inner pages on your own, most players do that when making junk journal. So it's important to know about the sizes of the leather binder ring that we used on our notebooks.

Types of leather binders

We have leather binders in A4 size, B5 size, A5 size, A6 size, A7 size, A8 size, A9 size, and M5 size.
By number of leather binder ring, we have 3 ring binder, 4 ring binder, 5 ring binder, 6 ring binder and 9 ring binder.

Different binder ring for different notebook

3 Ring Binder

A 3-ring binder is usually used on making A9 binders. 
The diameter of each leather binder ring: 20mm
The length of 3-ring binder: 90mm

6 Ring Binder

6 ring binder is one of the most popular leather binders. A 6-ring binder is usually used on A5, A6 and A7 notebooks. Therefore, there are three different sizes with 6 ring binders.
The diameter of each leather binder ring: 19mm
The length of A5 6-ring binder: 226mm
The length of A6 6-ring binder: 180mm
The length of A6 6-ring binder: 133mm