turtle age

Question
How do you find the age of a turtle?

Answer
The only way to know the age for sure is to know the hatch date.  You can't count rings on the scutes or anything like that.  You can roughly estimate the age of hatchlings and juveniles based on size, but this isn't very accurate because growth rate can vary quite a bit based on individual genetics, availability of food, and other factors.  Turtles will typically grow faster in captivity, but generally will hit maturity at about 3-5 years.