You are 42 years old if you were born on September 13, 1981.
You are 42 years 7 months, 1 week, and 3 days old or 511 months old or 2,223 weeks old or 15,563 days old or 373,512 hours old or 22,410,720 minutes old or 1,344,643,200 seconds old You were born on a Sunday.