Calculate Your Age
Enter your date of birth to see your exact age and life statistics.
How the Age Calculator Works
Simple steps to find your exact age.
Enter Birthdate
Select your date of birth from the date picker. The calculator works for any date.
Set Reference Date
Optionally set an "As Of" date. Defaults to today. Use a future date for projected age.
Calculate
Click "Calculate Age" and the tool computes your exact age using calendar-aware arithmetic.
View Life Stats
See your age in years/months/days, total days, hours, weeks, and next birthday countdown.
What Is an Age Calculator?
Understanding age computation.
How age is calculated
An Age Calculator computes the exact time elapsed since your birth. It uses calendar-aware subtraction: years, then months, then days — accounting for varying month lengths and leap years.
Your age changes at midnight on your birthday. If born on March 15, 1995, on March 14, 2026 you're 30 years 11 months 30 days. On March 15, 2026, you turn exactly 31.
Leap year birthdays
People born on February 29 have their birthday every 4 years on the actual date. In non-leap years, most countries legally recognize March 1 as their birthday. The calculator handles both scenarios.
Life statistics
Beyond years-months-days, the calculator converts your age to total days (life span in days), hours lived, and weeks. These numbers often surprise people — a 30-year-old has lived over 10,950 days!
When to Use an Age Calculator
Common age calculation needs.
Legal Age Verification
Check if someone meets minimum age requirements for voting, driving, drinking, or retirement at a specific date.
Medical Records
Doctors require exact age for prescriptions, growth charts, developmental milestones, and insurance eligibility.
Form Applications
Job applications, visa forms, and insurance policies need your precise age as of a specific date.
Birthday Planning
Find out what day of the week your next birthday falls on. Plan parties and celebrations accordingly.
Sports Eligibility
Youth sports leagues require age cutoff verification. Calculate age as of the season start date.
Personal Milestones
Calculate days until milestone birthdays — 18th, 21st, 30th, 50th, 100th. Track your life in numbers.
Age Calculation Examples
Sample age calculations.
30 years old
Born Jan 15, 1996 → Today Jun 23, 2026 = 30 years, 5 months, 8 days = 11,117 days.
Child age
Born Sep 1, 2020 → Today = 5 years, 9 months, 22 days. Useful for school enrollment cutoffs.
Turning 18
Born Jul 4, 2008 → Jul 4, 2026 = exactly 18 years. Legal adult in most countries.
Frequently Asked Questions
Common questions about the Age Calculator.
Enter your date of birth. The calculator computes the exact difference between your birthdate and today, giving you your age in years, months, and days, plus total days and hours lived.
Yes. The calculator uses the Gregorian calendar and correctly handles leap years. If you were born on February 29, your age is calculated accurately even in non-leap years.
Yes. Enter a custom "As Of" date to calculate your age at any point in time — past or future. This is useful for determining age at milestones or events.
The calculator shows your total days lived, total hours, total minutes, and total weeks. For example, a 30-year-old has lived approximately 10,957 days.
The calculator shows your next birthday date and how many days until it arrives. It also tells you what day of the week your next birthday falls on.
Yes, completely free. No sign-up required. All calculations happen locally in your browser.