You are 24 years old if you were born on September 9, 1999.
You are 24 years 7 months, 2 weeks, and 2 days old or 295 months old or 1,285 weeks old or 8,995 days old or 215,880 hours old or 12,952,800 minutes old or 777,168,000 seconds old You were born on a Thursday.