You are 51 years old if you were born on December 9, 1972.
You are 51 years 4 months, 1 week, and 3 days old or 616 months old or 2,679 weeks old or 18,759 days old or 450,216 hours old or 27,012,960 minutes old or 1,620,777,600 seconds old You were born on a Saturday.