You are 45 years old if you were born on September 18, 1978.
You are 45 years 6 months, 1 week, and 3 days old or 546 months old or 2,375 weeks old or 16,628 days old or 399,072 hours old or 23,944,320 minutes old or 1,436,659,200 seconds old You were born on a Monday.