Basic Year Difference Approach The simplest way to convert date to age in Excel uses the YEAR function to extract the year from today and the year from the birth date. Consistent formatting of the birth date column also ensures that all calculations behave predictably across the workbook.
Calculate Age on Specific Date in Excel with Step-by-Step Guidance
Wrapping formulas with IF and ISDATE checks, or using IFERROR, prevents misleading results and maintains the integrity of your dataset. For strict compliance and audit trails, pairing this with a conditional check to verify whether the birthday has passed ensures higher reliability.
Using YEAR and TODAY Functions The formula `=YEAR(TODAY()) - YEAR(A1)` assumes cell A1 contains a valid birth date. Using the INT function to round down this quotient produces an integer age.
Calculate Age on Specific Date in Excel with Step-by-Step Guidance
However, for applications such as insurance, legal compliance, or medical eligibility, a more exact calculation is necessary to avoid discrepancies. Formula Example and Limitations An example formula is `=INT((TODAY() - A1) / 365.
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