Wikipedia:Age calculation templates

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Templates that self-update every day are very useful for a dynamic online encyclopedia like Wikipedia. However, in mirrored versions of the site as well as future print versions, such statistics will immediately become inaccurate. As such, they should always be accompanied by a note to indicate the date at which it was last correct. The note itself can be made self-updating along with the age calculation template by adding "as of {{FULLDATE}}".

Even with a time stamp, such templates should only be used when the self-updating feature is needed, such as in an article like List of Canadian Prime Ministers by time in office or in the {{birth date and age}} template used in an infobox for a living person.

Common age calculation templates include the following.

Age

• {{age}}
• {{age at date}}
• {{age nts}} - for use in sortable tables
• {{age in days}}
• {{age in days nts}} - for use in sortable tables
• {{age in years and days}}
• {{age in months}}
• {{age in weeks}}
• {{age for infant}} - displays months and days up to one year, years and months up to three years, and years beyond

Dates

• {{birth date}}
• {{birth date and age}}
• {{birth year and age}}
• {{death date}}
• {{death date and age}}
• {{death year and age}}
• {{BirthDeathAge}} - combines the functionality of the above six birth and death templates