{{Age in years|2000}} yields 23–24.
{{Age in years|1900|1950}} yields 49–50.
Note that the template provides an age range: during the year 2015, someone born in 2000 is either 14 or 15 years old, depending on whether they have passed their birth date in the later year.
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.
