The age calculator is used to compute the age in years, months, and days by entering the date of birth and current date.

Just follow the three simple steps:

Firstly, you need to enter your date of birth. For that, you can use the drop-down options to select month and day and enter the year using the keyboard.

Now second step is to enter the today's date or age at the date of. By default, the today's date is selected. But if you want to find the age for a different date then you can change it.

After entering the dates, just press the "Calculate" button and see your exact age result on your screen. Also, you will get your output in years, months, weeks, days, hours, and even seconds.

Using an age calculator is the best and quickest way to calculate your age. But if you are still interested to know how age is calculated manually, you can read the article below.

Firstly, you need two values to get started.

- Date of Birth
- Today's Date

So, to calculate your age, you need to subtract today's date with your date of birth. As a result, you will get duration between two dates and that's your **"Age"**.

Let's take some examples to understand it. Also, in the following examples, we will only calculate the years, months, and days.

Suppose Jason's date of birth is 05 January, 1990. Today's date is 10 September, 2019. Find out how old Jason is?

So, Jason is **29 years, 8 months, and 5 days** old.

Now the question is, what if today's date of month is smaller than DOB's month?

So, let's take an example for that type of case.

Suppose, date of birth is 10 August, 1994 and today's date is 24 March, 2020. Calculate the age.

As you can see above, 03 is less than 08.

So, in this case we will take 1 year = 12 months from 2020 and add it to 03 months.

Now, months will be **03 + 12 = 15** and year will be **2020 - 1 = 2019**.

After subtraction, we get **25 years, 7 months, and 14 days**.

What if today's date of month and day both are smaller than DOB's month and day?

You will get this question's answer in next example.

Calculate the age for:

- DOB = 15 May, 1985
- Today's Date = 05 February, 2018

In this case, Month 02 is less than 05 and Day 05 is less than 15.

So, firstly, we will take 1 year = 12 months from 2018 and add it to 02 months.

As a result, Months = **02 + 12 = 14**, and Year = **2018 - 1 = 2017**.

After that, we will take 1 month = 31 days from 14 months and add it to 05 days.

Therefore, Days = **05 + 31 = 36**, and Months = **14 - 1 = 13**.

Finally, Age = **32 years, 08 months, and 21 days**.