This template returns the duration between two specified dates as a number of full years and remaining months. If the second set of parameters is not included, the duration is between the specified date and today's date.

{{age in years and months |year1|month1|day1 |year2|month2|day2}}
{{age in years and months |year1|month1|day1}}  (causing the current date to be used as the second date)
Markup Renders as
{{age in years and months |1989|7|23 |2003|7|14}}

13 years, 11 months

{{age in years and months |1989|7|23 |1989|8|22}}

0 month

{{age in years and months |1989|7|23 |1989|8|23}}

1 month

{{age in years and months |1989|7|23 |1990|7|23}}

1 year

{{age in years and months |1989|7|23}}

35 years, 3 months

{{age in years and months |1990|7|23 |1989|7|23}}

−1 year

{{age in years and months |1990|9|23 |1989|7|23}}

−1 year, 2 months