How do I calculate the birth date from a person’s age when they died?

The information found on a gravestone will often include the date of death and how old the person was when he or she died. From this age information you can quickly and easily calculate the birth date. To do this, press the Calendar button on the toolbar to display the Calendar window. Click on the Date Calculator tab and then enter the date the person died in the Death Date field. Now enter the age of the person in the Years, Months, and Days fields. To figure the birth date, press the Calculate button. The birth date appears in the Birth Date field.