Calculate the chronological age of a person from their date of birth easily with our online calculator. Result displayed in years, months, and days.
The chronological age is
Chronological age is the time that has passed since an individual's date of birth to today. In other words, it is the number of years, months, and days a person has been living on the planet. Currently, chronological age is used as the standard metric to assess an individual's level of aging within an ecosystem or population. This way of measuring aging applies to all living beings, as it uses time (equally for everyone) as the unit of measurement.
The exact chronological age of a person is calculated by subtracting their date of birth from the current date. Since time is measured in years, months, and days, solving this operation is not straightforward. That's why we provide this online calculator for you to quickly and easily determine someone's age.
Calculating chronological age using Microsoft Excel can be useful for tracking, analysis, or reports that require this information. Below, I present a simple method to obtain age in years, months, and days from a date of birth:
In an Excel cell, you can use the following formula to calculate chronological age from the date of birth: =DATEDIF(Date_of_Birth; TODAY(); "Y") & " years, " & DATEDIF(Date_of_Birth; TODAY(); "YM") & " months, " & DATEDIF(Date_of_Birth; TODAY(); "MD") & " days"
Replace "Date_of_Birth" with the reference to the cell containing the individual's date of birth. This formula uses Excel's DATEDIF function to calculate the difference between the date of birth and the current date (TODAY()), providing the age in years, months, and days as a text string.
Let's assume the date of birth is in cell A2. The formula would look like this: =DATEDIF(A2; TODAY(); "Y") & " years, " & DATEDIF(A2; TODAY(); "YM") & " months, " & DATEDIF(A2; TODAY(); "MD") & " days"
By entering this formula in an Excel cell, it will display the person's age in years, months, and days, using the current date for calculation. Using this formula will allow you to obtain chronological age quickly and accurately in Microsoft Excel for any date of birth.
As mentioned in the previous question, chronological age uses time (equally for everyone) as the basic unit to measure an individual's level of aging. In contrast, biological age uses the state of an individual's body wear and tear as the basic unit to establish their level of aging. This allows two people with the same chronological age to have different biological ages. The difference between biological ages is determined by each individual's genetics, which defines the rate of aging for each organ in our body.