Age Calculator

Calculate your exact age in years, months, weeks, and days from your birthday. Free age calculator for any past or future date.

Birthday Day of Year (1-365)

Birth Year Offset (years ago)

Today Day of Year (1-365)

Result

30.27

How is age calculated?▼

Age is the difference between two dates. This calculator converts that gap into years (divided by 365.25), months, weeks, and days.

Why 365.25 days per year?▼

365.25 accounts for leap years (one extra day every 4 years), giving an accurate long-run average for age in years.

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