Birth Date Calculator

Developed by Mac Titmus for Long Island Genealogy

Many old tombstones show the date of death and the age of the deceased in years, months, and days. This calculator simplifies the task of determining the date of birth from that information. All dates are according to the Gregorian calendar with the year beginning on January first.

Please make entries in each box on lines 1 and 2
Use a zero where you do not have a number to enter

	Day	Month	Year
Date of Death =>
Age at death in Days - Months - Years
Calculated Birth Date Will Appear Here - Day - Month -Year:

To perform your calculation enter data on both lines 1 and 2 then press this button