Mine's 12 inches

Yeah they come in many sizes.    Jumbo is anything over 16 inches.  Large can be defined as anything from 10 to 16 inches.    Some people consider 12 inches to be small.  Of course we are talking pizza sizes, what did you think.    When you compare pizza prices you have to consider how large is large.  Is it a 10 inch large or a 12 inch large