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Age Calculator

Inputs

Birth Date

Select your date of birth

Reference Date

Calculate age as of this date (leave blank for today)

Years

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Your age in complete years

Months (total)

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Days (total)

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Years Component

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Months Component

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Days Component

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Days Until Birthday

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Formula

Age in Years = (Reference Date - Birth Date) / 365.25; Age Components = Calculate full years first, then remaining months, then remaining days