Template:Age in years, months and days

some time

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This template employs intricate features of template syntax.

You are encouraged to familiarise yourself with its setup and parser functions before editing the template. If your edit causes unexpected problems, please undo it quickly, as this template may appear on a large number of pages.
You can conduct experiments, and should test all major changes, in either , the general template sandbox, or your user space before changing anything here.

This template returns the number of full years, then surplus months, then surplus days between two specified dates. If the second set of parameters is not included, it will return the number of years, months and days between a specified date and today's date. The words "year", "month" and "day" are plural when appropriate.

The years and months are separated by a comma. Since serial commas are optional and use varies, this template does not automatically place a comma after the months. If a serial comma is desired, adding |sc=y to the template invocation will include one.

See Wikipedia:Age calculation templates for more information on using this kind of template.

Syntax

{{Age in years, months and days|year= |month= |day= }} or

{{Age in years, months and days|yyyy|mm|dd|yyyy2|mm2|dd2}}

Examples

{{Age in years, months and days|year=2001|month=1|day=15}} returns "23 years, 11 months and 7 days"

{{Age in years, months and days|2001|01|15|2008|09|05}} returns "7 years, 7 months and 21 days"

{{Age in years, months and days|2016|8|4|2016|9|5}} returns "1 month and 1 day"

Notes

This template can handle an ambiguous start date:

{{Age in years, months and days|year=2010|month=9}} returns "14 years and 2 or 3 months"

{{Age in years, months and days|2009|6||2011|2|21}} returns "1 year and 7 or 8 months"

But it cannot handle an ambiguous end date:

{{Age in years, months and days|2012|11|2|2016|4}} returns "Error: Invalid time. 3 years, 5 months and 20 days"

{{Age in years, months and days|2012|11|2|2017}} returns "Error: Invalid time. 5 years, 1 month and 20 days"

Since the length of a month varies, the number of days to roll over the number of months varies.

{{Age in years, months and days|2007|3|12|2015|6|11}} returns "8 years, 2 months and 30 days"

{{Age in years, months and days|2007|3|12|2015|7|11}} returns "8 years, 3 months and 29 days"

To add a serial comma specify |sc=y.

{{Age in years, months and days|year=2001|month=1|day=15|sc=y}} returns "23 years, 11 months, and 7 days"

{{Age in years, months and days|2001|1|15|2008|9|5|sc=y}} returns "7 years, 7 months, and 21 days"

{{Age in years, months and days|2016|12|8|sc=y}} returns "8 years and 14 days"

TemplateData

This is the TemplateData documentation for this template used by VisualEditor and other tools; see the monthly parameter usage report for this template.

TemplateData for Age in years, months and days

This template returns the number of full years, surplus months, and surplus days between two specified dates. If the second set of parameters is not included, it will return the number of years, months and days between a specified date and today's date.

Template parameters
Parameter		Description	Type	Status
Year ('from' date)	`1` `year`	The year of the (first) date	Number	required
Month ('from' date)	`2` `month`	Number of the month of the (first) date	Number	required
Day of month ('from' date)	`3` `day`	The day of the month of the (first) date	Number	optional
Year ('to' date)	`4`	The year of the 'to' date, if required Default the current year	Number	optional
Month ('to' date)	`5`	Number of the month of the 'to' date, if required Default the current month	Number	optional
Day of month ('to' date)	`6`	The day of the month of the 'to' date, if required Default the current day	Number	optional
Serial comma	`sc`	Enter 'y' to turn on the serial comma after the months Default none	Line	optional