MicroCalculatorsAge Calculator
Calculate your exact age in years, months, and days. Enter your date of birth — the calculator shows your age as of today.
Age Calculator — FAQ
- How is age calculated exactly?
- Age is calculated by counting full years from your birth date to today, then remaining full months, then remaining days. The result reflects your completed years, months, and days of life.
- Does it account for leap years?
- Yes. The calculator uses JavaScript's built-in Date object, which correctly handles leap years and varying month lengths when computing the difference between dates.
- Can I calculate age for a future date?
- This calculator computes age as of today's date. For a future reference date, you would need to adjust the calculation manually.
- What if my birthday is today?
- If today is your birthday, the calculator will show 0 months and 0 days remaining in the current year count, and the next birthday countdown will show 365 (or 366) days.
How Old Am I — Age Calculator
This age calculator computes your exact age in years, months, and days from your date of birth to today. Simply enter the day, month, and year you were born, and the result updates instantly. It is commonly used to verify whether someone has reached a milestone age — for example, checking if a person is 18 for legal purposes, 21 for certain permissions, or 65 for retirement eligibility. The calculator also shows a countdown to your next birthday so you always know how many days remain.
Age calculation accounts for the varying lengths of calendar months and correctly handles leap years. The difference between two dates is not simply a matter of subtracting numbers — February 29 birthdays, month-end edge cases, and year boundaries all require careful handling, which this calculator performs automatically using reliable date arithmetic. Whether you need your age for a form, a legal document, or simple curiosity, enter your birthdate above for an instant, accurate result.
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Last updated: March 2026