You are 43 years old if you were born on May 9, 1980.
You are 43 years 10 months, 2 weeks, and 5 days old or 526 months old or 2,289 weeks old or 16,029 days old or 384,696 hours old or 23,081,760 minutes old or 1,384,905,600 seconds old You were born on a Friday.