You are 103 years old if you were born on March 12, 1921.
You are 103 years 1 month, 1 week, and 5 days old or 1237 months old or 5,380 weeks old or 37,664 days old or 903,936 hours old or 54,236,160 minutes old or 3,254,169,600 seconds old You were born on a Saturday.