You are 40 years old if you were born on February 4, 1984.
You are 40 years 2 months, 2 weeks, and 1 day old or 482 months old or 2,097 weeks old or 14,685 days old or 352,440 hours old or 21,146,400 minutes old or 1,268,784,000 seconds old You were born on a Saturday.