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Age Calculator: Exact Age in Years, Months and Days

This free age calculator works out your exact age in years, months and days from your date of birth. It also gives total days, hours and minutes lived, the weekday you were born and the countdown to your next birthday.

By Debmedia Technologies LLP · Kolkata, India · Updated

What Is It and When Do You Need It?

Your age is the time that has passed since you were born, counted in calendar years, months and days. You may need it for forms, school and job applications, insurance, pension planning or just curiosity. Months have different lengths, so counting by hand is slow.

Enter a date of birth and the tool shows your exact age, plus the total days, weeks, hours and minutes you have lived.

How to Use This Tool

  1. Pick your date of birth with the date box.
  2. Optionally choose a different date to measure age on.
  3. Press Calculate.
  4. Read your age and the countdown to your next birthday.

How the Calculation Works

The calculator subtracts the birth date from the target date year by year, then month by month, borrowing the true number of days from the previous month when the day count would go negative. Total days are the difference between the two calendar day numbers. Hours and minutes are the total days times 24 and 1,440.

Worked Example

Born on 15 August 1990, on 2 November 2026 the age is 36 years, 2 months and 18 days. The total is 13,228 days, and the next birthday is 15 August 2027.

Common Uses

  • Application forms and ID checks.
  • Finding the age on a certain date, such as a cut-off for school entry.
  • Planning birthdays and milestones.
  • Insurance and pension questions.

Tips and Common Mistakes

  • Use the second date to check age at a deadline.
  • Time of birth is not needed for age in years and months.
  • The weekday of birth is shown in the table.

Next, you may need the date difference calculator, days until calculator, day of the week calculator, zodiac sign finder.

Everything runs in your browser. Nothing you type is uploaded, stored or sent to any outside service.

Frequently Asked Questions

The tool counts whole years from the birth date, then whole months, then the days left over, using the real length of each calendar month.
In non-leap years the birthday is counted on 1 March in the countdown, and your age in years increases on that day. Laws differ by country, so check official rules if it matters.
Yes. Fill in the second date to find how old you were, or will be, on that day.
No. The calculation runs in your browser and nothing is sent or saved.

Disclaimer: results are calculated in your browser from the numbers you enter. Check important results before you rely on them for money, health, safety or legal decisions.