If you’ve ever pondered existential questions such as, “How old am I today?”, “How old was I on this particular date in the past?” or “How old will I be in the year 2050?”, then this age calculator is designed to assist you.
Age Calculator / Age Counter
The exact age calculator lets you choose from a variety of time units - from milliseconds to years - so finally, you can get answers to your age-related questions:
- What is my age?
- How many days old am I?
- How many months old am I?
- How many weeks old am I?
In the text, we'll cover examples of time calculations (if you were born in 1999, how old are you, how many days are there in 15 years, how to calculate age from date of birth, etc.)
What is my age?
Age, in general, is the amount of time for which something existed.
A person's age is the time that has passed from the moment they were born. The time before birth is called the gestational age (the age of a pregnancy is counted from conception).
In most parts of the world, a baby starts life at 0 and becomes 1 year old on the first anniversary of their birth. However, in some countries (notably in Korea), age is counted differently. In the text, we'll use the most common system.
Let's see how to use the age calculator to help you answer the question - "what is my age?".
How old am I today? Ask the age calculator
How old are you? The easiest way to answer this is to use the age calculator and let it calculate age from your date of birth:
- In the first field of the age calculator, input your birth date. You can either type it in (input the first three letters of the month's name followed by the day, a comma, and the year, e.g., "Oct 1, 1996"), or click the calendar icon and select the date.
- If you want to know your exact age in a "small" unit (e.g., you're wondering, "how old am I in seconds?"), you can set the time of your birth in the
advanced mode. If you leave it empty, the age calculator will count the time from midnight the day you were born. - The date in the third field of the age calculator is set to "today". If you want to know your current age ("How old am I today?"), leave it as it is.
- Select the unit in which you want your result - this lets you answer different questions ("How many months old am I?", "How many weeks old am I?", "How many seconds old am I?").
- The time is counted from birth till now, including the current time.
The result will be exact if you choose "years/months/days." In this option, we assume that a month passes from the chosen day of the first month to the same day of the second month (e.g., 22.02 to 22.03). If you choose the "months" unit, we will assume that months have 30.4375 days (that's an average). In the "years" option, we assume a year has 365 days (we don't account for leap years).
How old are you? Calculate age from the date of birth
We'll now learn how to calculate age from date of birth without help from the age calculator.
Let's say it's 15.01.2021, and you were born on 5.12.2000. Let's time-travel and count:
- Start on your date of birth. Go forward in time - check how many years you have to add to reach your last birthday:Your last birthday was on 5.12.2020. Subtract the years:
5.12.2020 - 5.12.2000 = 20 years - Now we're on 5.12.2020. Add as many full months as you can but don't go too far into the future (stop before you reach today).In this example, if we go 1 month forward from 5.12.2020, we land on 5.01.2021 and so have to stop time traveling in months.
- Add the remaining days. We're on 5.01.2021. We can simply subtract days:
15.01.2021 - 5.01.2021 = 10 days - Add the results from steps 1-3. We get
20 years, 1 month and 10 days.
How many days/weeks/months/... old am I?
This age calculator includes various time units, so it can answer all the strange questions like "How many weeks old am I?", "How many seconds old am I?", "How many days old am I?", etc.
To check your age in different units, enter your date of birth, make sure you have today's date in the second field, and set the desired unit in the last field of the age calculator.
