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Date Calculator

Date Calculator


Days Between Two Dates

Start Date

End Date

Holiday Setting

If not in the list, define the holidays below:

Holiday Name




Add to or Subtract from a Date

Start Date

Add / Sub:





Business Days Settings

If not in the list, define the holidays below:

Holiday Name



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Download Date & Day Calculator App for Your Mobile, So you can calculate your values in your hand.


An online day & date calculator is the tool that allows you to calculate date difference (number of days) or  business days between two given dates. Simply, this date duration calculator works as a day counter and also helps you to:

  • Calculate plus or minus years, months, weeks, or days from a given date
  • Calculate number of days added to or subtracted from a given date

Note: Our day & date calculator considers the workweek from “Monday” to “Friday” and Saturday & Sunday is assumes as a weekend in a 7 day of a week. Also, this date counter helps you to perform dates calculations if Saturday is your working day.

So, before knowing about how this date & day calculator finds out number of days between two dates, you should beware of basic terms. This post helps you in better understanding to count days or even answer the question of how many days until today.

You can also try our online age calculator that allows you to determine your age in years, months weeks & even in the days.

Read on!

Evidence-Based Study About Date & Day:

Before the use of Gregorian calendar, an older concept of Julian calendar was used. It was excellently close to the precise length of the year. After so many years in the Middle Ages, the attempt to measure the time was first viewed as interfering into God’s affairs. In 1582, Caesar’s calendar finally reformed the Julian calendar to count days of the year. The “new” calendar, which is in the use today, was not adopted regularly across Europe until well into the 18th century. Now we can take its assistance to calculate days between two dates with accuracy. This date to date calculator is specialized to keep track of dates along with the calculation of the number of days.

How to Calculate Days Between Two Dates & Add to or Subtract from a Date With This Day & Date Calculator:

The days calculator is 100% free and required only basic parameters to determine days and even count holidays, date, calendar days, years, months, and weeks for your convenience. Year calculator is intended to calculate all the possible holidays of the year in one click. In this way it will be easy to keep the record of the holidays of whole year. Let’s swipe down to know about the inputs that you have to enter and outputs that this calculator generates.

Calculate Days Between Two Dates:


  • First of all, you have to enter the start date that you want to compute (for e:g here we selected 01/01/2018)
  • Very next, you have to enter the end date (for e:g 02/02/2020)
  • Now, there’s a box, if you check the left side box, then the 1 day is added in the resultant days (for e:g we check this box)
  • Next, you can find the right box, if Saturday is working day, then check the box (for e:g we uncheck this box as Saturday is the weekend day)
  • Now, it comes to holiday setting, if you want to calculate only calendar days, then simply click on the first option of “Don’t Count Holidays”
  • And, if you want to calculate how many business day, holiday, and weekend between two dates, then define holidays (for example: we check on “Don’t Count Holidays”
  • Finally, hit the calculate button of this day & date calculator


The calculator will shows the following different results between two dates:

  • Years
  • Months
  • Weeks
  • Days
  • Hours
  • Minutes
  • Seconds
  • Business days
  • Weekend days

Add to or Subtract From a Date:


  • At first, you ought to enter the start date for which you want to perform calculations
  • Now, you have to select the operation that you want to perform on the selected date, the operation will be either (+) Add or (-) Subtract
  • Next, you just have to enter how many year, month, week, or day you want to add or subtract from the given date
  • Now, you can see the box, check this box if you want to add to or subtract the business day from a given date
  • There are two options in business days settings: “exclude weekend only” or “exclude weekend and holidays below
  • Once you entered the parameters according to your calculation requirements, simply hit the calculate button


  • The day counter will shows you the final date corresponding to the given date

How Many Days Between Two Dates?

Simply, you can try an online day calculator to determine the number of days between two dates, but if you want to calculate it yourself, then swipe down!

Imagine that you have a difficult project due at your workplace and you are given specific days between 2 dates. You can use the days’ counter as a reminder as well as you can count between dates manually. Suppose you have the following two situations:

  • You need to calculate the date on which the progress check will take place and the due date is 27 December while initial date is 14 October?
  • You have to calculate the days you have before the progress check takes place?

To have the answer of the first situation, you need to deduct 14 days from the final date that is December 27. In this way, you will rapidly determine that the progress check will take place on 13th December.

Now we have the date on which the progress check will take place, we can easily determine the number of days between two dates. It is known as the difference between dates. You will simply count the days to date (27 December).

  • First of all, you have to minus the 14 days from the due date that is December 27 to have the progress check date i.e. 27 December – 14 December = 13 December.
  • Now apply a formula to calculate days between starting and ending date.
  • Number of days: 365 (year – 1) = (year – 1 / 4) -) – (year – 1 / 100) + (year – 1 / 400) + d + 367-362/ 12.
  • The result will be 61 days that you have left to complete your work.

Also, you can try an online date calculator to know the calendar days find the days between any two given dates.

Where You Need to Count The Days Between Dates (Common Applications):

The date calculator becomes very useful if you want to check out:

  • How many days since quarantine started
  • How many weeks between Halloween and Christmas
  • How many months between the new year
  • How long has it been since the Civil War ended
  • How many days are left until an official assignment
  • When you will be one billion seconds old
  • How many years left until the golden jubilee
  • How many days are left until a special day (wedding day, birthday, anniversary, etc)
  • How many days have passed since your friend wedding.

Our week Calculator is intended to calculate the weeks between dates. This week counter is an online and easily accessible tool to keep record of any two dates, past, current or future number of weeks.


How do I calculate the number of days start a date in Excel?

In Excel, you can readily count number of days between two dates by using a simple formula i:e =End date –Start date, but this formula will exclude the start date. You can also use the calendar counter if you want to count days between two dates or calendar days.

How do I calculate years duration in Excel?

In a new cell, all you need to type in =DATEDIF(A1,B1,”Y”). The “Y” indicates that you had like the information, which reported in years. This will provides you with the number of years between the two dates. Want to determine the number of months or days between two dates, then simply type into a new cell: ==DATEDIF(A1,B1,”M”) for months or =DATEDIF(A1,B1,”D”) for days.

What day has the most birthdays?

The real birth data complied depict from 20 years of American births, mid-September is said to be as the most birthday-packed time of the years, 9th of September being the most popular day to be born in America (U.S), and followed closely by 19th of September. Also, you can use our online age difference calculator that helps you to find the exact age gap between the two persons or anything.


From the source of day Wikipedia: Day (defined): Introduction form Apparent and mean solar day and more

From the source of pumas: How Many Days Are in a Year?

From the source of nationaltoday: National Day Calendar: what holiday is today or what holidays are coming up

From the source of english stackexchange: What’s the difference between day and date!

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