How old are your favorite cartoon characters?

Cartoon characters never seem to age, but Buzzfeed.com has a list of how old some of them would be now, if they aged like the rest of us.

1. SpongeBob SquarePants would be 27. In fact, his 27th birthday was Sunday.

2. Daria would be 31.

3. Bart Simpson would be 33

4. Jem would be 47.

5. Arnold from "Hey Arnold!" would be 26.

6. Grandpa Phil from "Hey Arnold!" would be 99.

7. Tommy Pickles from "Rugrats" would be 22.

8. George Jetson would be 91. As the site notes: Quote, "His character was 40 when 'The Jetsons' first aired in 1962. Or, depending on how you think about it, he hasn't even been born yet considering the show took place in the year 2062."

9. Judy Jetson would be 66.

10. Allegra from the Nick Jr. show "Allegra's Window" would be 22.

11. Charlie Brown would be 42.

12. Penny from "Inspector Gadget" would be 40.

13. Hello Kitty would be 47 . . . in PEOPLE YEARS.

14. Beavis and Butt-head would be 35.

15. Wheeler from "Captain Planet" would be 40.

16. Strawberry Shortcake would be about 39.

17. Arthur the aardvark would be 25.

18. Pepper Ann would be 27.

19. The Powerpuff Girls would be 20.