You are 46 years old if you were born on March 21, 1978.
You are 46 years 1 month, 2 weeks, and 2 days old or 554 months old or 2,407 weeks old or 16,849 days old or 404,376 hours old or 24,262,560 minutes old or 1,455,753,600 seconds old You were born on a Tuesday.