I got this from this month's issue of Cat Fancy.
Kitten is birth to 6 months old.
Junior is 7 months old to 2 years old.
Prime is 3 years old to 6 years old.
Mature is 7 years old to 10 years old.
Senior is 11 years old to 14 years old.
Geriatric is 15 years and older.
kittens that are 0-1 month old in human years are 0-1 year old.
kittens that are 2-3 months old in human years are 2-4 years old.
kittens that are 4 months old in human years are 6-8 years old.
kittens that are 6 months old in human years are 10 years old.
kittens that are 7 months old in human years are 12 years old.
cats that are 1 year old in human years are 15 years old.
cats that are 18 months old in human years are 21 years old.
cats that are 2 years old in human years are 24 years old.
cats that are 3 years old in human years are 28 years old.
cats that are 4 years old in human years are 32 years old.
cats that are 5 years old in human years are 36 years old.
cats that are 6 years old in human years are 40 years old.
cats that are 7 years old in human years are 44 years old.
cats that are 8 years old in human years are 48 years old.
cats that are 9 years old in human years are 52 years old.
cats that are 10 years old in human years are 56 years old.
cats that are 11 years old in human years are 60 years old.
cats that are 12 years old in human years are 64 years old.
cats that are 13 years old in human years are 68 years old.
cats that are 14 years old in human years are 72 years old.
cats that are 15 years old in human years are 76 years old.
cats that are 16 years old in human years are 80 years old.
cats that are 17 years old in human years are 84 years old.
cats that are 18 years old in human years are 88 years old.
cats that are 19 years old in human years are 92 years old.
cats that are 20 years old in human years are 96 years old.
cats that are 21 years old in human years are 100 years old.
cats that are 22 years old in human years are 104 years old.
cats that are 23 years old in human years are 108 years old.
cats that are 24 years old in human years are 112 years old.
cats that are 25 years old in human years are 116 years old.
Kitten is birth to 6 months old.
Junior is 7 months old to 2 years old.
Prime is 3 years old to 6 years old.
Mature is 7 years old to 10 years old.
Senior is 11 years old to 14 years old.
Geriatric is 15 years and older.
kittens that are 0-1 month old in human years are 0-1 year old.
kittens that are 2-3 months old in human years are 2-4 years old.
kittens that are 4 months old in human years are 6-8 years old.
kittens that are 6 months old in human years are 10 years old.
kittens that are 7 months old in human years are 12 years old.
cats that are 1 year old in human years are 15 years old.
cats that are 18 months old in human years are 21 years old.
cats that are 2 years old in human years are 24 years old.
cats that are 3 years old in human years are 28 years old.
cats that are 4 years old in human years are 32 years old.
cats that are 5 years old in human years are 36 years old.
cats that are 6 years old in human years are 40 years old.
cats that are 7 years old in human years are 44 years old.
cats that are 8 years old in human years are 48 years old.
cats that are 9 years old in human years are 52 years old.
cats that are 10 years old in human years are 56 years old.
cats that are 11 years old in human years are 60 years old.
cats that are 12 years old in human years are 64 years old.
cats that are 13 years old in human years are 68 years old.
cats that are 14 years old in human years are 72 years old.
cats that are 15 years old in human years are 76 years old.
cats that are 16 years old in human years are 80 years old.
cats that are 17 years old in human years are 84 years old.
cats that are 18 years old in human years are 88 years old.
cats that are 19 years old in human years are 92 years old.
cats that are 20 years old in human years are 96 years old.
cats that are 21 years old in human years are 100 years old.
cats that are 22 years old in human years are 104 years old.
cats that are 23 years old in human years are 108 years old.
cats that are 24 years old in human years are 112 years old.
cats that are 25 years old in human years are 116 years old.
