Date Calculators

Birthdate Calculator - Day/Month/Year

DMY Age Calculator

Created and provided by Ben Buckner

Calculates birthdate from death date and age of death in day/month/year format.

Assumes New Year on Jan. 1.

This new version can use two different computation methods:

30-day fixed-length months (the "8870" system is a variant of this)
Calendar-length months

Please keep in mind that due to uncertainty as to which calculation method was originally used and due to possible errors in the original calculation, calculated dates should be considered to be accurate only to within a few days unless you have good reason to be more confident in them. It is not unusual to encounter original calculation errors as large as 1 month, so beware!

Calendar:

Month Length:

Enter date of death and age at death:

	Day	Month	Year
Death:
	Days	Months	Years
Age:

Born

To perform your calculation, click on this button: .

DMY Age Calculator

This is yet another great utility by: Ben Buckner

Calculates age from date and date of birth in day/month/year format.

Assumes New Year on Jan. 1.

This version can use two different computation methods:

30-day fixed-length months (the "8870" system is a variant of this)
Calendar-length months

Also note that the fixed-length month calculation does not give the exact time elapsed!

Calendar:

Month Length:

Enter date from which to calculate age and date of birth:

	Day	Month	Year
Date:
	Day	Month	Year
Birthdate:

Age:	days	months	years

To perform your calculation, click on this button: .