You are 40 years old if you were born on December 28, 1983.
You are 40 years 3 months, 3 weeks, and 5 days old or 484 months old or 2,103 weeks old or 14,727 days old or 353,448 hours old or 21,206,880 minutes old or 1,272,412,800 seconds old You were born on a Wednesday.