Birth from Death Date Calculator

Determine the date of birth by working backwards from the date of death and age.

Date of Death

Age at Death

Yrs

Mos

Days

The Estimated Birth Date Is

--/--/----

How does this calculation work?

This calculator subtracts the age (years, months, and days) from the date of death to find the date of birth. This is frequently used in genealogy when only a death certificate with age is available.

Usage Steps:

Enter the Date of Death found on the record.
Enter the Age exactly as written (e.g., 72 Years, 4 Months, 12 Days).
The calculator will provide the date on which the person was likely born.