If you want to calculated the number of years between two dates, you can use the YEARFRAC function, which will return a decimal number representing the fraction of a year between two dates. Here are a few examples of the results that YEARFRAC calculates:
Once you have the decimal value, you can round the number if you like. For example, you could round to the nearest whole number:
If you need to calculate years on an ongoing basis, for example to get age based on a birthday, see the example here.
Note: The YEARFRAC function has an optional 3rd argument that controls how days are counted when computing fractional years. The default behavior is to count days between two dates based on a 360-day year, where all 12 months are considered to have 30 days. The YEARFRAC page provides more information.
To calculate a person's age from their birth date, you can use the YEARFRAC , INT , and TODAY functions . In the generic version of the formula above, birthdate is the person's birthday with year, and TODAY supplies the date on which to calculate...
The Excel INT function returns the integer part of a decimal number by rounding down to the integer. Note the INT function rounds down, so negative numbers become more negative. For example, while INT(10.8) returns 10, INT(-10.8) returns -11.
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