Herramientas Web

Age difference between two people

The comparison is already turned on: enter the two dates of birth and you will see the difference in years, months, and days.

Leave it empty to use today.

More options: name and February 29

Used to build the result sentence. If you leave it empty, the result is addressed to you.

If you were born on February 29, in years without a 29th your birthday is on

Dates and names are not saved or included in this page’s link.

Age
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Enter your date of birth to calculate your exact age.

How it is calculated

Formula
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With your values
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Your age goes up on your birthday. If you were born on February 29, in non-leap years February 28 or March 1 is used, depending on what you choose in “More options”.

Continue with
Days between dates calculatorAdd or subtract days from a dateBusiness days calculator
Step by step

How to use it

  1. Enter the date of birth as mm/dd/yyyy, or pick it from the calendar.
  2. By default the age is calculated for today. If you need the age on another day, change “Calculate age on”, for example for an application or a form.
  3. Read the age in years, months, and days, and the totals in months, weeks, days, and hours.
  4. See when the next birthday is, which day of the week it falls on, and how many days are left. Turn on “Compare with another person” to see who is older and by how much.
FAQ

Frequently asked questions

How is the difference calculated?

It takes the earlier date of birth and breaks the gap down into years, months, and days, plus the total number of days. It also tells you which of the two people is older.

Does it work for siblings or a couple?

It works for any two dates. You can give each person a name so the result sentence reads with those names.

What if both were born on the same day?

Then it tells you there is no age difference. If only the year is different, the gap is shown in exact years, months, and days.

Comparing the ages of two people

Knowing who is older and by how much is handy for family trivia, for filling in forms, or just out of curiosity. This page starts with the age comparison already turned on: enter both dates of birth and the result appears instantly.

What the result shows

Besides saying who is older, the tool breaks the difference down into years, months, and days and gives the total number of days. If you like, enter names so the sentence is personalized. To calculate a single exact age, go back to the age calculator.

Updated on September 29, 2026