Age Calculator – Free Online Date of Birth Calculator

Need a fast and accurate age calculator? Our free online age calculator helps you calculate age by date of birth or find a birth year from your current age in seconds. Whether you are filling out official forms, verifying age requirements, or just curious about your exact age, this simple tool gives you instant and reliable results.
This age calculator works as both a date of birth calculator and an age calculator by year, making it flexible for different situations.

Choose an option

Date of Birth

Calculate Age On

How to Use This Age Calculator

Using this age calculator is simple:

Select Choose an option at the top of the tool.
If you want to calculate your age, choose Date of Birth → Age.
Enter your Date of Birth.
Select Calculate Age On (leave it as Today for current age).
Click Calculate Age to see your result.

To find your birth year instead:

Select Age → Birth Year.
Enter your current age in years.
Click Calculate Age.

The results will clearly show your calculated birth year, along with an explanation if two possible years apply.

What Is an Age Calculator?

An age calculator is a tool that determines a person’s age based on their date of birth and a selected reference date. It calculates the difference between two dates and presents the result in years, months, and days. Unlike a basic date calculator, this tool focuses specifically on age-related calculations. It can also function as a date of birth calculator year tool, helping you determine possible birth years if you only know your age.

Age Calculator by Date of Birth

The most common use is an age calculator by date of birth. Simply enter your date of birth, choose the date you want to calculate your age on (usually today), and click calculate. This age calculator by date of birth free tool will instantly display:

Your current age in years
Age in years, months, and days
Additional time breakdowns if needed

This makes it ideal for school forms, job applications, legal documents, and age verification.

Age Calculator by Year

If you only know your age but not the exact birth date, you can use the age calculator by year option. Enter your current age, and the tool will estimate your possible birth year. In some cases, two possible years may appear. This happens because your birthday may or may not have occurred yet in the current year.

How This Compares to Google Age Calculator

Many users search for “age calculator google” to quickly calculate age directly in search results. While Google provides basic calculations, it lacks advanced breakdowns and detailed explanations. This dedicated age calculator gives clearer results and additional calculation options compared to a simple search result.

Age Calculator App vs Online Tool

You may also search for an age calculator app, especially for mobile devices. However, this web-based age calculator works instantly in your browser without installing anything. It functions just like an app but without taking up storage space. It works on desktop, tablet, and mobile devices.

Common Questions

How do I calculate age from date of birth?

Enter your date of birth into an age calculator and select today’s date. The tool subtracts the birth date from the selected date and shows your age in years, months, and days.

Is this age calculator free?

Yes, this age calculator by date of birth free tool can be used without registration or payment.

Can I calculate birth year from age?

Yes. Use the Age → Birth Year mode to estimate your birth year. The tool may show two possible years depending on whether your birthday has passed this year.

Tools You May Find Useful

References

- Time and Date – Date Calculator

This age calculator is designed to be fast, accurate, and easy to use. Whether you need a simple date of birth calculator or want to determine a birth year from age, this tool provides reliable results in seconds. Try it now and calculate your age instantly.