How old was Heath Ledger in 10 Things I Hate About You?

You might be surprised to learn how young—or old—some stars were in iconic scenes. Knowing that can offer insight into their career stage and personal growth. Let’s dive into that fascinating detail.

During the filming of 10 Things I Hate About You, Heath Ledger was:

19 years old

After checking the dates, that’s the calculated age of the celebrity.

We calculated the age by referencing the first day of the year 10 Things I Hate About You was launched:

January 1, 1999

And the date of birth of Heath Ledger:

April 04, 1979

Because filming and release dates are relatively close but not the same, the real age of Heath Ledger during production might differ by a year from the one displayed.