How to Calculate Age in Years, Months, and Days: Formulas & DOB Methods

Calculating age from a date of birth seems simple until leap years and months with 28, 30, or 31 days come into play. Whether calculating age for employment forms, legal eligibility, or milestone anniversaries, exact precision matters.

The Standard Age Calculation Algorithm

1. Subtract the birth year from the current year.
2. If the current month and day have not reached the birthday yet, subtract 1 year.
3. Calculate remaining months and days based on the days in the previous month.

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