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Age to Birthday Calculator

Created by Luis Hoyos
Reviewed by Komal Rafay
Last updated: Jan 18, 2024


Welcome to the age-to-birthday calculator, a tool created to know your birthday according to your age.

This age-to-birthday converter can also do the opposite: knowing your age from a birthday date. Therefore, you can use it to discover how old you would be if born in 2002, 2003, or any other year and day of a month.

How to use the age-to-birthday converter

As its name indicates, this age-to-birthday calculator has two functionalities:

  • Calculating your birthday according to your age: input your age, and you'll get the corresponding birthday; and
  • Knowing your age from your birthday date: select your birth date, and you'll discover how old you are.

The reference date (On...) corresponds to the inputted or resulting age. For example:

  • If you input 20 years and your reference date is Jan 31st of 2024, we'll calculate the birthday of someone who is 20 years old on that date.
  • If you input your birthday and your reference date as Jan 31st of 2024, we'll calculate how old you are on that date (Jan 31st, 2024).

By default, the reference date is set to today, as the age we usually know or need to know corresponds to that day.

Other age and birthday calculators

If this age-to-birthday converter results helpfully, these other tools will also be valuable for you:

FAQ

How old would you be if born in 2002?

Once your birthday occurs in 2023, you'll be 21 years old. The reason is that from 2002 to 2023, 21 years have passed. If your birthday didn't occur this year yet, you are still 20 years old.

How old am I if I was born in 2003?

Once your birthday occurs in 2023, you'll be 20 years old. To know how old you are if you were born in 2003:

  1. Subtract the current year from the birth year:
    Current year - Birth year = 2023 - 2003 = 20 years
  2. Look at your birthday: If your birthday didn't occur this year yet, you are still 19. Once the birthday arrives, you'll finally be 20.

How old am I if I was born in 1997?

Once your birthday occurs in 2023, you'll be 26 years old. To know how old is someone born in 1997:

  1. Subtract the current year from the birth year:
    Current year - Birth year = 2023 - 1997 = 26 years
  2. Look at your birthday: If your birthday didn't occur this year yet, you are still 25 years old. Once this happens, you'll finally be 26.
Luis Hoyos
Date of birth
Age
yrs
mos
days
On...
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