How old am I? [Online calculator]

Do you want to know How old are you, exactly? ? Between your date of birth in the calculator below and find out your age in years, months, and days.

How old am I?

Enter your date of birth in the age calculator below. The result is displayed automatically, without any data being stored on a server.

Recalculate

You've been on Earth for:
0 year(s), 0 month(s), and 0 day(s)
In months : 0
In days : 0
In hours : 0
In minutes : 0
In seconds : 0

How do I calculate my age using my date of birth?

The principle is simple: you subtract the'year of birth at the'current year, then we adjust it based on your birthday. If your birthday has already passed this year, you're considered to be the full age. Otherwise, we subtract one year.

Example : You were born on 29/12/1990. The tool compares that date to today and displays your age in years, months, and daysto the second near.

1. Click "Recalculate".

2. Check out the results of the computer.

The result gives you the total number months, days,'hours, of minutes and of seconds spent on Earth. Just enter your date of birth and click the button.

How do I calculate my age using two dates?

You can definitely Calculate your age between two dates accurate, without using a calculator. All you need is your date of birth and the date you want to know your age. Here's how to do it:

1. Subtract the'the year you were born in the year of the date in question.
2. Check the months and days : Subtract one year if your birthday hasn't happened yet this year.
3. the final result tells you how old you are on that date.

Example : born on 29/12/1990, do you want to know your age at 11/06/2023.

1. Years : 2023 minus 1990 = 33 years old.
2. Months and days : In June, your December birthday hasn't happened yet in 2023. So we subtract one year.
3. Final result: you would have 32 years old June 11, 2023.

This formula works for any dates. To calculate years, months, and days As for the details, the calculator at the top of the page does that automatically.

How do you calculate your age in Excel?

Excel Calculate your age very easily with a simple formula. Here are the steps to follow:

1. Create a table with your date of birth, today's date, and your final age.

2. Fill in your date of birth in B1 (e.g., 12/29/1990).

3. Use the formula =AUJOURDHUI() to automatically display the current date.

Remark : checks that the cells B1 and B2 are in the "Date" format.

4. Subtract the date of birth (B1) as of today (B2)

5. Divide this number of days by 365,25 to find your age in years.

Remark : ",25"is used to take into account the leap years, for a more accurate result. And there you go—now you know Calculate Your Age Automatically in Excel, in just a few seconds and without any errors.

How do I calculate my age in days?

Do you want a more precise result than just number of years ? Here's how to calculate your age in days, step by step:

1. Subtract the'the year you were born the year of your last birthday to get the number of years that have passed.
2. Multiply this result by 365 (or by 366 (for a leap year) to calculate the number of days since your birth.
3. Add the days that have passed from your last birthday until the current date.

Example : born on 29/12/1990, here is the calculation for the 23/04/2025.

1. Past years: 2024 minus 1990 = 34 years old, whose 9 leap years.
2. Non-leap years: 34 minus 9 = 25 years old.
3. Days since your birth: (25 × 365) + (9 × 366) = 9,125 + 3,294 = 12,419 days.
4. Days since the last birthday (December 29, 2024, to April 23, 2025): 115 days. So 12,419 + 115 = 12,534 days.

Visit 23/04/2025, your age is 12,534 days.

How do I calculate my age in months?

The method is similar to the one based on days. You'll need your date of birth and the today's date, then follow these steps:

1. Subtract your year of birth from the year of your last birthday.
2. Multiply this number by 12 to find out how many months have passed since you were born.
3. Add the full months that have passed from your last birthday until today.

Example : for a birth on 29/12/1990, here are the details at 23/04/2025.

1. Past years: 2024 minus 1990 = 34 years old.
2. Months since your birth: 34 × 12 = 408 months.
3. Full months since the last birthday (29/12/2024) :
   • From December 29, 2024, to January 29, 2025: 1 full month.
   • From January 29, 2025, to February 28, 2025: 1 full month (February 2025 has 28 days; it is a non-leap year).
   • From February 28, 2025, to March 28, 2025: 1 full month.
   • From March 28, 2025, to April 23, 2025: Since April 28 has not yet arrived, this month is not over yet.
4. Your age in months: 408 + 3 = 411 months.

Visit 23/04/2025, your age is 411 months.

Can you calculate your age in hours?

Yes, the age calculator The top of the page does this automatically. Enter your date of birth and it converts the time that has passed since your birth into hours, but also in minutes and in seconds.

How do you calculate a baby's age?

Unlike adults, a baby's age is often expressed in month rather than in years. Here's how to calculate it based on your date of birth :

1. Count the number of days elapsed between his date of birth and today's date.
2. Think about the leap years : they add 366 days instead of 365.
3. Divide the total by 30,5, the average number of days in a month.
4. Round the result to the nearest whole number to get the age in months.

Example : Your baby was born on 23/01/2023 and you want to know how old he is at 23/04/2025.

1. Past years: 2025 minus 2023 = 2 years, including 1 leap year.
2. Total number of days :
   • From January 23, 2023, to January 22, 2024: 365 days.
   • From January 23, 2024, to January 22, 2025: 366 days (leap year).
   • From January 23, 2025, to April 23, 2025: 90 days.
   • Total : 365 + 366 + 90 = 821 days.
3. Age in months: 821 / 30.5 = 26.918, or 27 months.

So your baby has 27 months as of April 23, 2025.

Why do I need to know my exact age?

Your exact age is involved in many legal and administrative procedures : the right to vote, a driver's license, purchasing alcohol or tobacco, or even the'use of certain social networks such as Snapchat.

Side health, age is also an important reference point. For a baby or child, it is sometimes measured in days, weeks, or months to monitor growth and vaccinations. In adults, it guides screening programs and risk assessment.

Enter your date of birth into the calculator at the top of the page: you'll get the result in years, months, and days in a second. And if you're curious to know the'average age of Tinder users, check out our article on the topic.