You are 39 years old if you were born on December 15, 1984.
You are 39 years 4 months, 1 week, and 4 days old or 472 months old or 2,053 weeks old or 14,377 days old or 345,048 hours old or 20,702,880 minutes old or 1,242,172,800 seconds old You were born on a Saturday.