This template calculates a person's approximate birth year based on their age at death. This is useful when a reliable source states only their age at death. This can also be used when a person is dead and a reliable source states only their age at the time of publication, but their actual death date is not known.
Combines functions of {{Birth date}}, {{birth-date}}, {{birth date and age}}, {{birth year and age}}, {{death date}}, {{death-date}}, {{death date and age}}, and {{death year and age}}.
To display approximate birth year and current age given a particular date (e.g. when a dated reference mentions the age of a person), only works for living people.
