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how to calculate date of birth in excel from age. DATEDIFDate-of-Birth TODAYym This will return the finished months among the date of starting and novel date once finished years. In the opening Formulas Helper dialog box choose Math from the drop-down list of Formula Type then in the Choose a formula section click at Calculate age based on birthday then in Arguments input section type the birthday cell address in the Date box and click the Ok button.
21 Go to the Age tab. DATEDIFDate-of-Birth TODAYym This will return the finished months among the date of starting and novel date once finished years. In the following formula the DATEDIF function determines a persons current age in years months and days.
3 Calculate Completed Days of a Persons Age once Completed Years and Months.
Calculate Age From ID Number. This can be easily entered as TODAY Function. In the first cell lets say A1 type the following formula. DATEDIFDate-of-Birth TODAYym This will return the finished months among the date of starting and novel date once finished years.