In the following article, you will learn how to calculate age in different ways.
Age Calculation by Using Date of Birth & Current Date
By using your accurate date of birth and current date, you can calculate age in different frequencies including:
While calculating age this way, keep in mind that you have to consider the total number of days in each month and leap years as well.
That’s all!
Let’s make a supposition that you were born on July 11, 1995. As of the current date (August 24, 2024), your age is calculated as follows:
Current Year - Birth Year = 2024 - 1995 = 29 years
Birth Month > Current Month? No.
Birth Month = Current Month, Birth Day > Current Day? No.
Then we have:
Remaining Days = 24 - 11 = 13 days
Remaining Months = 8-7 = 1 month
Use Age In Days To Calculate Age
The age in days can also be used as a more precise way to compute age. By taking into account the precise number of days that have passed between the birthdate and the present date, this method yields an accurate computation.
Consider the previous example again in which we had:
Age Calculation In Days:
Number of dates between current date and birthdate = 10,637 days
Age in years = 10,637 days/365 = 29 years
Days remaining = 10,637 days% 365 = ?
Here we have:
10637 % 365:
This is the modulo operation, which returns the remainder when 10,637 is divided by 365.
10,637 divided by 365 equals 29 with a remainder of 178.
So, 10,637 % 365 equals 178.
= 178 days:
The result of the modulo operation (178) represents the remaining days after dividing 10,637 by 365.
So, the remaining days are 178.
Age in Months = 178/30 = 5.9 months
Remaining Days = 5.9%30
By applying the same modulo operation, we get:
Remaining days = 6 days
(Age Calculation Using Excel)
For those comfortable with spreadsheet software like Microsoft Excel, you can utilize its built-in functions to calculate age in years, months, and days accurately. Excel offers the DATEDIF function, which calculates the difference between two dates in various units, including years, months, and days.
To calculate age using this function:
Highly accurate! Yes, these methods can be applied for leap years and varying number of days for each month. This is why, they provide you with accurate calculations of the age.