Mr Online Tools

Free Online Age Comparison Calculator

How much older is person A compared to person B?

Compare age
Free Online Age Comparison Calculator

Accurate Age Comparison Calculator

This online age comparison calculator is a free tool used to compare ages between two individuals. On the other side, you can also compare younger’s date of birth(YDOB) and elder’s date of birth(EDOB) easily. It is also known as a birthday comparison calculator.

Using the Age Comparison Calculator

To compute the distance in age between two birthdays, simply fill out the two input fields:

  • Birthday One: Enter the birthday of the first person
  • Birthday Two: Enter the second person's birthday
Once you're happy with the dates, hit the 'Calculate Age Difference' button. Then we'll run off and do the math for the next three fields.

Age Difference: We'll report back who is older and how much older they are. Breakdown will be as follows:

  • Younger Person's Age: We report the first person's age in years, months, days, hours, minutes and seconds
  • Elder Person's Age: The second person's age today in years, months, days, hours, minutes and seconds

Enter elder & younger's birthdays

What is Age Difference?

The Age difference is the difference between two ages. It is the measure where it defines the difference between two ages. It can be easily calculated by taking the difference between two different dates, months and years. If both the entities are the same, then there is no difference in age. For example, if Ramesh was born on 15th January 1998, and Suresh was born on 03rd, July 1995, then the age difference between Ramesh and Suresh is 2 years, 6 months and 12 days, respectively.


  • Step 1: Enter the birth details of the two persons (i.e) Person A and Person B.
  • Step 2: DOB’s are formatted in DD-MM-YYYY.
  • Step 3: Subtract Younger’s DOB and Elder’s DOB, (i.e.) A-B = C
  • Step 4: Now you get C.
  • Step 5: Thus the age difference is found easily now.

Age Difference is the difference between two ages. The formula for age difference is

A - B = C

That means you minus the two ages or minus the two Date of Birth(DOB)’s.

If you want to compare age or to find an exact age difference between the younger and older age , use this age comparison calculator. This web tool has used effective steps to get you the precise answer in the next few seconds. Anybody can access this online birthday comparison calculator from anywhere.

An often-asserted rule of thumb to determine whether an age difference is socially acceptable holds that a person should never date someone whose age is less than half their own plus seven years.

As a general guideline, though, the American Veterinary Medical Association breaks it down like this: 15 human years equals the first year of a medium-sized dog's life. Year two for a dog equals about nine years for a human. And after that, each human year would be approximately five years for a dog.

How many cat years are in a human year? The first year of your cat's life is considered the equivalent of 15 human years. The second year adds nine more human years to the total, which means 2 cat years are approximately 24 human years. After this, each additional human year is around four 'cat years'.

Then you can simple subtract the number of years from the current year, number of days and you will have found out your date of birth. Example 1: A is 32 years and 12 days old on 12 January 2021. When would be his birthday? Example 2: B is 27 years and 2 months 1 day old on 8 January 2021.

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