You are 40 years old if you were born on July 7, 1983.
You are 40 years 9 months, 2 weeks, and 2 days old or 489 months old or 2,128 weeks old or 14,901 days old or 357,624 hours old or 21,457,440 minutes old or 1,287,446,400 seconds old You were born on a Thursday.