How long does it take for a wolf to grow into an adult?

a gray wolf can range from 59 inches to eighty inches. well the average length of the grey wolf ( or timber wolf ) is 6.5 feet long
Mexican wolves are 3.5 - 4.9 feet long, typical gray wolves are 4 - 6.6 feet long, and the largest subspecies of wolves are 4 - 7 feet long.