How do I calculate my exact age?

Enter your date of birth and today's date (or any target date). The calculator computes the difference in complete years, remaining months, and remaining days, giving you your precise age.

How are months and days calculated when dates don't align?

The calculator uses calendar-aware logic. If the birth day is greater than the number of days in the target month, it borrows from the previous month. For example, if born on Jan 31 and the target is March 1, the result accounts for February's shorter length.

Can I calculate the time between any two dates?

Yes. Use the 'Date Difference' tab to find the exact duration between any two dates in years, months, days, or total days/weeks/hours.

How do I find out how many days until my next birthday?

Use the 'Next Birthday' tab. Enter your date of birth and the calculator will show exactly how many days, weeks, and months remain until your next birthday, plus what day of the week it falls on.

Does this calculator account for leap years?

Yes. The calculator uses full calendar-aware date arithmetic and correctly handles leap years, varying month lengths, and all edge cases.

Free & Instant

Age Calculator

Find your exact age in years, months, and days. Calculate time between dates, days until your next birthday, and more.

Date of Birth

Age on Date

Your Age

Start Date

End Date

Time Between Dates

Date of Birth

Next Birthday

How to Calculate Your Exact Age

Knowing your exact age down to the day is more useful than you'd think. From filling out official documents to calculating eligibility for programs, insurance, or milestones — precision matters. This calculator handles all the calendar math for you, including leap years and varying month lengths.

Age in Years, Months, and Days

The most common way to express age. The calculator counts complete years first, then remaining complete months, then remaining days. It uses calendar-aware arithmetic, so it correctly handles edge cases like being born on the 31st of a month.

Age = Target Date − Date of Birth (in years, months, days)

Example: Born on March 15, 1998. Age on January 10, 2026:
27 years, 9 months, and 26 days.

The calculator also gives you your total age expressed in different units — total months, total weeks, total days, and even total hours — for whenever you need those figures.

Time Between Two Dates

Need to know how long a project lasted, how many days between two events, or the duration of a contract? The Date Difference tab gives you the exact span between any two dates, broken down in multiple formats.

Example: From June 1, 2023 to March 8, 2026:
2 years, 9 months, and 7 days — or 1,011 total days.

Days Until Your Next Birthday

The Next Birthday tab calculates exactly how many days remain until your next birthday, what day of the week it falls on, and how old you'll be turning. Handy for countdown planning or just satisfying curiosity.

Example: Born on July 20, 1995. Today is March 8, 2026:
134 days until your next birthday. You'll turn 31 on a Monday.

Leap Year Handling

A common question is what happens if you were born on February 29. This calculator handles it correctly: in non-leap years, your birthday is treated as March 1 for age calculation purposes, which is the standard convention used in most legal systems.

Frequently Asked Questions

Enter your date of birth and today's date (or any target date). The calculator computes the difference in complete years, remaining months, and remaining days, giving you your precise age.
The calculator uses calendar-aware logic. If the birth day is greater than the number of days in the target month, it borrows from the previous month. For example, if born on January 31 and the target date is March 1, the result correctly accounts for February's shorter length.
Yes. Use the "Date Difference" tab to find the exact duration between any two dates in years, months, days, or total days, weeks, and hours.
Use the "Next Birthday" tab. Enter your date of birth and the calculator will show exactly how many days, weeks, and months remain until your next birthday, plus what day of the week it falls on.
Yes. The calculator uses full calendar-aware date arithmetic and correctly handles leap years, varying month lengths, and all edge cases including February 29 birthdays.
This calculator provides accurate results for personal reference. For official or legal purposes, always verify with the relevant authority, as different jurisdictions may have specific rules for age computation (especially around February 29 birthdays).