Find Your Exact Age
Calculate your exact age in years, months, and days. You can also check your total days, weeks, months, and upcoming birthday.
Age Calculation
Next Birthday
Age Calculation Details
What Is Age Calculation?
Age calculation determines how much time has passed between a person's date of birth and a selected date. The result can be displayed in years, months, and days for a more precise age.
This online age calculator lets you enter a date of birth and calculate an exact age on today's date or another date that you choose.
How to Calculate Age
Age is commonly calculated by comparing the birth date with the date on which the age is being calculated. The difference can then be expressed as complete years, remaining months, and remaining days.
Age = Current Date − Date of Birth
A simple subtraction is not always enough to determine the exact number of months and days because months have different lengths and leap years affect the number of days in a year.
How This Age Finder Works
Enter your date of birth and select the date on which you want to calculate your age. The calculator then determines the completed years, remaining months, and remaining days.
- Enter your date of birth.
- Choose today's date or another calculation date.
- Calculate your exact age.
- See your age in years, months, and days.
- See the total number of days elapsed.
- Check the date and countdown to your next birthday.
Age in Years, Months, and Days
A person's age is often described only in complete years, but an exact age calculation can also show the remaining months and days. For example, someone may be 24 years, 7 months, and 12 days old on a particular date.
Showing the additional months and days provides more detail than simply subtracting the birth year from the current year.
Calculate Age on a Specific Date
You do not have to calculate age only for today. Select another date in the Calculate Age On field to determine how old someone was or will be on that date.
This can be useful for checking age on a particular event date, application date, school enrollment date, or other important date.
Age Calculation and Leap Years
Leap years contain an additional day compared with regular years. The calculator accounts for calendar dates when calculating the exact difference between two dates.
This means the result is based on the actual calendar rather than assuming that every year has exactly the same number of days.
Next Birthday Calculator
After calculating your age, the tool also identifies your next birthday and shows the approximate number of days remaining until it.
If the selected calculation date falls on your birthday, the calculator recognizes that date before calculating the next birthday.
Frequently Asked Questions
What is an age calculator?
An age calculator calculates the difference between a date of birth and another date, usually showing the result in years, months, and days.
How can I calculate my exact age?
Enter your date of birth and the date on which you want to calculate your age. The calculator will show the exact difference in years, months, and days.
Can I calculate my age on a past date?
Yes. Select the past date in the Calculate Age On field to find your age on that specific date.
Can I calculate my age on a future date?
Yes. A future date can be selected to determine the age you will have reached on that date.
Does age calculation account for leap years?
Yes. The calculator uses calendar dates and accounts for leap years when calculating the date difference.
Can I find my age in total days?
Yes. The result includes the total number of elapsed days between the birth date and selected calculation date.
How many days are left until my next birthday?
Enter your date of birth and calculate your age. The result section will show the next birthday and the number of days remaining.