How to choose your books size?
There are different size systems in use: 1)US the U.S size; 2)European And Australian Popular Size; 3)Chinese Size
1 inches=2.54 mm
Following are some popular size of different country:
1)USA and Canada popular size
2)European And Australian Popular Size
3)Chinese Popular Size
More about the popular and standard size for different type of books, please refer “standard size” blog post.