Age Calculator
Calculate your exact age in years, months and days from your date of birth and a selected date.
Leave the calculation date set to today to find your current age, or choose another date to calculate your age at a specific point in time.
How the Age Calculator Works
The age calculator compares your date of birth with a selected calculation date. It determines the number of complete years first, then calculates the remaining months and days.
Unlike a simple difference between two years, an exact age calculation accounts for the actual months and days in the calendar, including different month lengths and leap years.
How to Use the Age Calculator
Enter Your Date of Birth
Select the day, month and year you were born.
Choose the Calculation Date
Use today's date for your current age or choose a future or past date for another calculation.
Calculate
The calculator displays your exact age, total elapsed time and next birthday information.
What Does Exact Age Mean?
If someone was born on January 15, 1990 and the calculation date is March 20, 2026, their exact age is 36 years, 2 months and 5 days. The years, months and days represent completed calendar periods between the two dates.
Age in Total Days
The calculator also shows the total number of elapsed days between the birth date and calculation date. This figure can differ from simply multiplying years by 365 because leap years contain an additional day.
Calculating Age on a Future Date
You can select a future date to determine how old you will be on that date. This can be useful for checking age at a planned event, milestone or eligibility date.
Leap Years and Age Calculations
A leap year generally occurs every four years, with special rules for century years. Leap days affect total-day calculations and are accounted for when calculating the elapsed time between dates.
Frequently Asked Questions
How do I calculate my exact age?
Enter your date of birth and the date on which you want to calculate your age. The calculator determines the difference in complete years, months and days.
Can I calculate my age on a future date?
Yes. Select any valid future date in the calculation-date field to find your age on that date.
Does the calculator account for leap years?
Yes. The date calculation uses calendar dates, so leap years and varying month lengths are reflected in the result.
What is the difference between age in years and total days?
Age in years describes completed calendar years, while total days counts every elapsed day between the two selected dates.
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