Age Calculator — Exact Age in Years, Months, and Days
Calculate your precise age in years, months, days, hours, and more. Find your next birthday countdown and the day you were born.
Your Age
25
years
0
months
1
days
You were born on a Monday in June
Total Months
300
Total Weeks
1,304
Total Days
9,132
Total Hours (approx.)
2,19,168
Next Birthday (2027)
364 days away
How to Use the Age Calculator
- Enter your date of birth using the date picker.
- The "Calculate as of" date defaults to today but can be changed to any date.
- Your exact age is shown in years, months, and days.
- Total months, weeks, days, and approximate hours are also displayed.
- A birthday countdown shows how many days until your next birthday.
What the Age Calculator Shows You
Exact Age
Years, months, and days with full precision
Total Days
Your age counted in total days lived
Total Weeks
Complete weeks since your birth date
Total Hours
Approximate hours since birth
Day of Birth
The weekday you were born on
Birthday Countdown
Days until your next birthday
Fun Age Facts
Your exact age is more complex than just counting years. Leap years add an extra day every four years (with some exceptions), and months have different lengths from 28 to 31 days. Our calculator accounts for all of these variations to give you the most precise result possible.
On your 10,000th day of life, you would be about 27 years, 4 months old. On your 1 billionth second (approximately), you would be around 31 years and 8 months old. These are fun milestones many people enjoy discovering with an age calculator.
Age calculators are also practically useful for filling out forms that require exact age, calculating age eligibility for services, planning retirement, or finding anniversary dates. You can use the "as of" date to calculate age at any point in the past or future.
Frequently Asked Questions
How do I calculate my exact age?
Enter your date of birth and the calculator will automatically compute your age in years, months, and days as of today. You can also change the reference date to calculate age at any point in time.
How many days old am I?
Our age calculator shows your exact age in total days. For example, a 25-year-old is approximately 9,125 days old (25 x 365 plus leap year corrections).
When is my next birthday?
The age calculator shows a countdown to your next birthday including exactly how many days remain.