By subtracting the birth year from the current year, you get a preliminary age value. Alternative with INT and Division Another approach to convert date to age involves calculating the difference in days between today and the birth date, then dividing by the average number of days in a year.
Excel Convert Date to Age Simple Method
Formula Example and Limitations An example formula is `=INT((TODAY() - A1) / 365. While this method is easy to implement, it does not consider the exact month and day, which can result in an age that is off by one year if the birthday has not yet occurred this year.
This method handles leap years and varying month lengths correctly, making it robust for formal reporting. Whether you are managing HR records, building a medical database, or tracking membership durations, understanding how to derive age from a date of birth ensures your data remains current without manual recalculation.
Simple Method to Convert Date to Age in Excel
Practical Tips for Maintenance. Using YEAR and TODAY Functions The formula `=YEAR(TODAY()) - YEAR(A1)` assumes cell A1 contains a valid birth date.
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