To determine how old you are, you need to know your date of birth and the current date. Your age is calculated as the number of full years that have passed since your birthdate. For example, if you were born in 1998, you would be 27 years old in 2025, assuming you have already had your birthday this year
. There are tools called age calculators that can compute your exact age in years, months, days, and even hours and minutes by entering your birthdate and the current date or any other date of interest
. These calculators account for leap years and other calendar considerations, making the calculation easier and more accurate than doing it manually. Age can be expressed in two ways:
- Completed age : The number of full years you have lived since birth.
- Running age : The age you are currently in, which is one year more than your completed age until your next birthday
In some cultures, age reckoning differs; for example, in some East Asian traditions, a person is considered 1 year old at birth and ages up at the New Year rather than on their birthday, which can make a difference of one or two years compared to the Western system
. In summary, to find out how old you are right now (on May 20, 2025), you need to know your birthdate and either use an age calculator or subtract your birth year from 2025, then adjust based on whether your birthday has occurred yet this year
