An age calculator helps you calculate your current or exact age from your date of birth. Enter your birth date and the calculator can show your age in years, months, and days.
You can also use an age calculator online to calculate your age on a specific date or find the age difference between two dates.
How to Use the Age Calculator
Using an age calculator by date of birth is simple:
- Enter your date of birth.
- Enter the current date or select a specific date.
- Click the calculate button.
- View your exact age in years, months, and days.
The calculator uses the date of birth and selected date to calculate the completed years, months, and days.
Calculate Age from Date of Birth
To calculate age from date of birth, the calculator compares your birth date with the current date.
For example, if your date of birth is 15 March 2000, your age depends on the date on which you perform the calculation.
An age calculator from DOB automatically performs this date calculation and gives you the result.
Exact Age Calculator
An exact age calculator provides more than just your age in completed years. It can calculate your age in:
- Years
- Months
- Days
- Weeks
- Days between dates
This makes it useful when you need your exact age from date of birth.
Age in Years, Months, and Days
Your chronological age can be expressed as completed years, months, and days.
For example:
Age: 25 years, 4 months, 12 days
This means 25 complete years have passed since the date of birth, followed by 4 complete months and 12 days.
Age Calculator Between Two Dates
You can also use an age calculator between two dates to find the difference between a birth date and another date.
This can be useful for:
- Age verification
- Application forms
- School admission
- Retirement calculations
- Comparing ages
- Checking age on a specific date
Age Difference Calculator
An age difference calculator determines the difference between two people’s birth dates.
Enter both dates of birth to calculate the age difference in years, months, and days.
The result depends on the exact dates entered.
Age on a Specific Date
An age calculator can also tell you your age at a specific date.
For example, you can calculate how old you were on:
- A past date
- An admission date
- An exam date
- A future date
- Your next birthday
Simply enter your date of birth and the date you want to calculate your age on.
How Is Age Calculated?
The basic age calculation compares your date of birth with the current date.
For completed years:
Age = Current Year − Birth Year
However, the result must be adjusted if your birthday has not occurred yet in the current year.
For an exact age, the calculation also considers the birth month, birth day, and the number of days in each month.
An online age calculator performs these calculations automatically.
What Information Do You Need?
To calculate your age, you generally need:
- Birth day
- Birth month
- Birth year
- Current date or target date
No other personal information is normally required.
Why Use an Online Age Calculator?
An online age calculator saves time and avoids manual date calculations.
You can use it to:
- Calculate your current age
- Find your exact age
- Calculate age in years, months, and days
- Find age in days or weeks
- Calculate age between two dates
- Find age on a specific date
- Calculate the age difference
Frequently Asked Questions
What is an age calculator?
An age calculator is an online tool that calculates a person’s age using their date of birth and a current or selected date.
How does an age calculator work?
It compares the date of birth with the current or selected date and calculates the completed years, months, and days between them.
How can I calculate my age from my date of birth?
Enter your date of birth into the age calculator, select the current date, and calculate your result.
How do I calculate my exact age?
Use your complete date of birth, including the day, month, and year. An exact age calculator can calculate your age in years, months, and days.
Can I calculate my age online for free?
Yes. An online age calculator can calculate your age from your date of birth without requiring manual calculations.
How does the age calculator calculate years, months, and days?
It compares the birth date with the selected date and accounts for the number of complete years, months, and remaining days.
Can I calculate my age between two dates?
Yes. You can enter two dates to calculate the difference between them.
What information do I need to calculate my age?
You normally need your date of birth and the current date or another date on which you want to calculate your age.
Can an age calculator calculate my age in days?
Yes. Depending on the calculator, you can calculate the total number of days between your date of birth and the selected date.
Can I use an age calculator to find my next birthday?
Yes. If the calculator includes a birthday feature, it can help determine the date and remaining time until your next birthday.