What Is an Age Calculator?
An Age Calculator is an online tool that determines the exact amount of time between a person's date of birth and another calendar date. Instead of showing only a person's age in completed years, it can calculate years, months and days for a more precise result.
Our Age Calculator also provides additional information such as total days lived, approximate weeks and hours, the day of the week you were born and information about your next birthday.
How Does the Age Calculator Work?
The Age Calculator compares your birth date with the selected target date using calendar years, months and days. This is more useful than simply dividing the total number of days by 365 because calendar months have different lengths and leap years contain an additional day.
For example, if your birthday has not yet occurred in the target year, the number of completed years is one less than the simple difference between the two year numbers. The calculator handles these calendar differences automatically.
What Can You Calculate?
This Age Calculator provides more than a single age number. After entering your birth date, you receive several useful calendar measurements immediately.
See your completed years plus the additional months and days.
See the total number of calendar days between the two selected dates.
View your approximate total weeks and hours for additional perspective.
Find your upcoming birthday and how many days remain until it arrives.
Discover whether you were born on a Monday, Tuesday or another weekday.
Calculate your age on a past or future date instead of only today.
Calculate Age on Any Date
One useful feature of the Age Calculator is the ability to change the target date. This means the tool can answer questions beyond your current age.
For example, you can determine how old you were on the day of an important event, calculate your age on a future birthday, or find your exact age on a specific application, enrollment or eligibility date.
Why Exact Age Can Be Useful
Your age in completed years is usually enough for everyday situations, but sometimes a more precise answer is helpful. An Age Calculator can show the additional months and days that are hidden when age is written only as a whole number.
This can be useful when checking timelines, comparing dates, planning birthdays, completing forms, reviewing historical events or simply satisfying your curiosity about how much time has passed since you were born.
Age in Days, Weeks, Months and Hours
The Age Calculator also converts the time between your birth date and the selected date into several easy-to-understand measurements.
Total days represent the elapsed calendar days between the two dates. Total weeks are calculated from those elapsed days, while total hours provide an approximate time measurement based on 24 hours per elapsed day.
The total-month figure is based primarily on completed calendar months, making it different from simply assuming every month has the same number of days.
Does the Calculator Handle Leap Years?
Yes. The Age Calculator works with actual calendar dates, including the different number of days in each month and leap-year dates. This is important because February does not always contain the same number of days.
People born on February 29 are also supported. When determining a future birthday in a non-leap year, the tool uses February 28 as the calendar reference for the birthday countdown.
Fast, Private and Easy to Use
Our Age Calculator performs the calculation directly in your browser. You do not need to create an account, sign in or submit your name to receive a result.
Simply choose your birth date, confirm the target date and select Calculate Age. Your result appears immediately on the page.