You are 42 years old if you were born on July 31, 1981.
You are 42 years 8 months, 3 weeks, and 3 days old or 513 months old or 2,229 weeks old or 15,608 days old or 374,592 hours old or 22,475,520 minutes old or 1,348,531,200 seconds old You were born on a Friday.