How old is my cat in human years? Cat Age : Human Age 6 months : 10 years 8 months : 13 years 10 months : 14 years 1 year : 15 years 18 months : 20 years 2 years : 24 years 4 years : 32 years 6 years : 40 years 8 years : 48 years 10 years : 56 years 12 years : 64 years 14 years : 72 years 16 years : 80 years 18 years : 88 years 20 years : 96 years 21 years : 100 years Back to Home Copyright 2006-2008 All rights Reserved Best One 2 One