You are 40 years old if you were born on December 13, 1983.
You are 40 years 4 months, 1 week, and 6 days old or 484 months old or 2,106 weeks old or 14,745 days old or 353,880 hours old or 21,232,800 minutes old or 1,273,968,000 seconds old You were born on a Tuesday.