Figuring out how old someone is can be tricky, and knowing their birthday makes it easy to calculate their age by looking at a calendar.

But what if you don’t know when they were born? Or what if you want to figure out how old they’ll be in a specific year?

That’s where an age calculator comes in handy.

## How to Use an Age Calculator

An age calculator is a tool that allows you to input a person’s birthdate and then calculate their age—either as of the current date or as of any other specific date.

For example, let’s say you want to find out how old your friend Sarah will be on her next birthday.

You would input her birthdate into the age calculator and set the “As of” date to her next birthday.

The calculator would then do the math and tell you that Sarah will be 27 years old on her next birthday.

If you want to know someone’s age as of today, you can use how old am I calculator to get the current age.

So, if we wanted to use our previous example to find out how old Sarah is today, we would input her birthdate in the **how old am I calculation** field. The calculator would then tell us that Sarah is 26 years old today.

## Conclusion

Figuring out someone’s age doesn’t have to be complicated. With an age calculator, you can quickly and easily determine someone’s age—whether as of today or as of any other specific date.

So, the next time you’re wondering how old someone is, make sure to try an age calculator.