what is the standard hole size for an exterior/interior doorknob?

http://www.hammerzone.com/archives/doors/knob/inst...

2-1/8" diameter but the lock set will come with a template.

The most common size for this hole in the U.S. and Canada is 2 1/8" (54 mm). - Lockset

The two most common hole sizes in the U.S. and Canada are 1 1/2" (38 mm) and 2 1/8" (54 mm). - Deadbolt

The two most common sizes in the United States and Canada are 2 3/8" (60 mm) and 2 3/4" (70 mm). - Latch backset

Standard Hole Sizes

1 1/2 - 1 3/4

James Cameron in Mariana Trench

circumference or diameter??

There's a template that

comes with the doorknob set.

Ta tudo em ingles não entendi nada