You are 40 years old if you were born on May 18, 1983.
You are 40 years 10 months, 1 week, and 3 days old or 490 months old or 2,132 weeks old or 14,925 days old or 358,200 hours old or 21,492,000 minutes old or 1,289,520,000 seconds old You were born on a Wednesday.