You are 39 years old if you were born on September 18, 1984.
You are 39 years 7 months, 1 week, and 1 day old or 475 months old or 2,066 weeks old or 14,465 days old or 347,160 hours old or 20,829,600 minutes old or 1,249,776,000 seconds old You were born on a Tuesday.