You are 40 years old if you were born on December 1, 1983.
You are 40 years 4 months, 3 weeks, and 1 day old or 484 months old or 2,107 weeks old or 14,754 days old or 354,096 hours old or 21,245,760 minutes old or 1,274,745,600 seconds old You were born on a Thursday.