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Age Calculator

Calculate your exact age from date of birth

Last Updated: July 2026
Select your date of birth
Calculate age as of this date
Exact Age
—
Years, months, days
Total Days
—
Days lived so far
Next Birthday
—
Days until next birthday

Age in Different Units

UnitValue

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What Is an Age Calculator?

An Age Calculator computes your exact age based on your date of birth. It shows age in years, months, and days, plus total days, weeks, hours, and even seconds lived. It also tells you how many days until your next birthday.

This calculator is useful for filling forms, checking eligibility criteria (age limits for exams, jobs), calculating retirement age, and satisfying curiosity about how long you have been alive!

Age Calculation Formula

Years = Current Year - Birth Year (adjusted for month/day)
Months = Current Month - Birth Month (adjusted)
Days = Current Day - Birth Day (adjusted for month length)
Years = Complete years elapsedMonths = Remaining monthsDays = Remaining days

Frequently Asked Questions

How is age calculated?
Age is calculated by finding the difference between the date of birth and the current date (or specified date). It accounts for years, months, and days, adjusting for varying month lengths and leap years.
What is my exact age?
Your exact age is the time elapsed since your birth, expressed in years, months, and days. For example, 30 years, 5 months, 12 days. This calculator provides precise age calculation including total days, weeks, hours, and more.
How to calculate age for official documents?
For official purposes, age is typically calculated in complete years. If you were born on January 15, 1990, you turn 35 on January 15, 2025. The age changes on your birthday, not at the start of the year.
Is age calculation affected by leap years?
Yes, leap years add an extra day (February 29) every 4 years. People born on February 29 (leap day) typically celebrate their birthday on February 28 or March 1 in non-leap years. This calculator handles leap years correctly.
How to calculate age in different units?
Age can be expressed in years, months, weeks, days, hours, minutes, or seconds. This calculator shows all units. For example, 30 years = 360 months = 1,560 weeks = 10,950 days (approximately).

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