When it comes to his role as a grandfather, Mayor Bloomberg has it all figured out — changing diapers has it all over feeding duties.

“I can tell you when I have a grandchild, if asked to do changing or feeding, I will do the same thing I did with my two daughters: changing. It is so much quicker and easier. Feeding goes on forever and ever,” the mayor said yesterday.

He was responding to the news, first reported by The Post’s Page Six, that his youngest daughter, 30-year-old Georgina, is pregnant.

Bloomberg said he has no preference on the baby’s gender, and insisted he won’t get involved in the naming game.