The 48-year-old actor, who is father to Maddox (11), Pax(8), Zahara (7), Shiloh (6) and and four-year-old twins Knox and Vivienne with partner Angelina Jolie, said he enjoys the growing up phase of his children, reported Contactmusic.
"I would describe it as a beautiful and controlled form of chaos. Sometimes you're tired and you kind of function on automatic but I really appreciate this time where the kids are still young and they're forming right in front of your eyes.
"I'm trying to enjoy it all because I know that one day I'm going to look back and they'll all be grown up and I'll miss this time," he said.
Pitt says the children are now habitual of travelling around the world alongwith their parents and create their "fantasy playgrounds" while staying in hotels.
"They are expert travellers. The older ones are getting very adept at packing up and taking along the books or toys they like to have with them. They know the routine by now and so it's much easier for me to organise everyone while Angie can pay more attention to getting the twins ready.
"It's quite something to watch them create their own little fantasy playground wherever we go - running around, jumping, playing make-believe. I love it! Most of the time!"