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Vera Lemon Vera Lemon is offline
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Default How do you add 18 years to a date in Excel?

This may be the long way, however, it worked for me...try this formula:

=C3+(18*365+4)

C3 would be the cell where your birthdate is. I multiplied 18 years times
365 days and had to add 4 because leap year occurs 4 times in an 18 year
period.

"Janelle Lister" wrote:

I'm trying to calculate the date of a person's 18th birthday using a formula
in Excel. For example, if the birthdate is January 1, 2000 the age of
majority is January 1, 2018. What formula can I enter to have Excel
calculate the date for me?