How old is tohru?

Answer 1

As the story progress the the characters get older. At the beginnning I'd say she's about 15 or 16. However I don't think they every say her age.

i think in the end she's about 18 or 19 because they are in their third year

Or 17, I'm 17 and I'm in my 3rd year.

Answer 2

Tohru Honda, the main character in the manga and anime "Fruits Basket," is 16 years old at the start of the series.