I know this sounds stupid but how old is Jasper? in human years. like physically? i can't find it anywhere!

if u go on to the new moon page then go on to the artikels theres one called the medow in edwards perspective. click on there and go to meer artikels door brown_x_eyes and on the seconde page theres a full biography for most of the characters, incase u need meer information about any one else.
but this is part of what it saids for jaspar-

Jasper was turned into a vampire in 1863 door a vampire named Maria when he was 20 years old.

i havent edited this at all. ive just copied part of it. hope this helps.

he's 20....

check out www.twilightlexicon.com under character bios