This template calculates a person's current age based on a known age as of specified date. This is useful when a reference states a person's age at the time of the reference's publication.
{{Age as of date|age|year|month|day}}
The age, year, and day must be supplied as natural numbers; month can be specified as a natural number as well as by name or abbreviation (e.g., "August" or "Aug"). The Gregorian calendar is assumed, with no special support provided for dual dating or the difference between Old Style and New Style dates .
If a reference dated July 4, 2022, mentions that someone is 50 years old, that person's current age can be rendered using:
{{Age as of date|50|2022|July|4}}
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Result
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| {{Age as of date|50|2022|1|1}}
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52–53
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| {{Age as of date|50|2022|12|31}}
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51–52
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| {{Age as of date|50|2022|12|29}}
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52
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| {{Age as of date|50|2022|Dec|29}}
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52
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| {{Age as of date|50|2022|December|29}}
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52
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Birth, death and age templates |
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Birth, death, age |
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| Template | Description / use | | {{BirthDeathAge}} | 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}}. | | {{birth date}} | To display a birth date and related hidden metadata. | | {{birth-date}} | | | {{birth date and age}} | {{birth date}} with suffix "(age N)". | | {{birth date and age2}} | {{birth date and age}} plus age as of a specified date. | | {{birth-date and age}} | As {{birth date and age}} but accepts dates in text form ("15 June 1950", "June 15, 1950", "June 1950", etc). | | {{birth year and age}} | Year of birth and approximate age. | | {{Birth based on age as of date}} | To display approximate birth year and current age given a particular date (e.g. when a dated reference mentions the age of a person). | | {{Birth date based on age at death}} | To display approximate birth year based on age at death. |
| Template | Description / use | | {{death date}} | To display a death date and related hidden metadata. | | {{death-date}} | | | {{death date and age}} | {{death date}} with suffix "(aged N)". Also called with {{event date and age}} | | {{death-date and age}} | As {{death date and age}} but accepts dates in text form ("15 June 1950", "June 15, 1950", "June 1950", etc). | | {{death date and given age}} | To display a death date and specified age. | | {{death year and age}} | To display a year of and approximate age at death. |
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Age only |
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| Template | Description / use | | {{age}} | Age based on number of complete years between two dates. | | {{age nts}} | {{age}} with output formatted for use in sortable tables. | | {{age as of date}} | Current age (in years) from a known age at a specified date. | | {{age for infant}} | Current age for infant: months and days up to one year, years and months up to three years, and years beyond. |
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Miscellaneous |
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| Template | Description / use | | {{OldStyleDate}} | Dates pre-1584 in Julian calendar |
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