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Age calculation in Tableau measure

Create a calculated field for Age

Create a calculated filed using the calculation below:

(Replace the [Birth Date] with the date of birth column from your datasource)


IF DATEADD('year', DATEDIFF('year', [Birth Date], TODAY()), [Birth Date])> TODAY() THEN

                            DATEDIFF('year', [Birth Date], TODAY())-1
                            ELSE
                            DATEDIFF('year', [Birth Date], TODAY())
                            END

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