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Date Calculator

Date Calculator

Simply enter the starting and ending date and the calculator will readily add or subtract to calculate the number of days among both of these.


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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An online date calculator helps you to calculate the number of days between two dates. It also adds or subtracts years, months, weeks, or days from a given date. Moreover, this date counter helps you to perform date calculations even if Saturday is your working day.

How Many Days Between 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 to accomplish it. Now 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 the initial date is 14 October?
  • You have to calculate the days you have before the progress check takes place?

First Situation:

Date = final date – 14 days

Date = 27 – 14

Date = 13

So, the progress check will take place on 13th December.

Second Situation:

Number of days: 365 (year – 1) = (year – 1 / 4) -) – (year – 1 / 100) + (year – 1 / 400) + d + 367-362/ 12 = 61 days

The result will be 61 days that you have left to complete your work.

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

The date calculator online 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, birth day)

How Does Date Calculator Work?

The days calculator is 100% free and requires only basic parameters to determine days and even count holidays, date, calendar days, years, months, and weeks for your convenience. Let’s find out how you could use it!

Calculate Days Between Dates:


  • Enter start and end date in their fields
  • If you wish to consider end date and Saturday as working day, you can select the options
  • You can also add holidays to count if any

Add to or Subtract From a Date:


  • Enter the start date
  • Select if you want to add or subtract days from start date
  • Now enter years, months, or days to be added or subtracted


  • Date difference (days) between two dates (years, months, weeks, days, hours, minutes, seconds, business days, weekend days)
  • Days are added or subtracted from the start date

Federal Holidays In The USA (2022):

New Year’s Day Jan. 1, 2022
Martin Luther King Jr. Day Jan. 17, 2022
President’s Day Feb. 21, 2022
Memorial Day May. 30, 2022
Juneteenth Day Jun. 19, 2022
Independence Day Jul. 4, 2022
Labor Day Sep. 5, 2022
Columbus Day Oct. 10, 2022
Veteran’s Day Nov. 11, 2022
Thanksgiving Nov. 24, 2022
Christmas Dec. 25, 2022

Federal Holidays In The USA (2023):

New Year’s Day Jan. 1, 2023
Martin Luther King Jr. Day Jan. 16, 2023
President’s Day Feb. 20, 2023
Memorial Day May. 29, 2023
Juneteenth Day Jun. 19, 2023
Independence Day Jul. 4, 2023
Labor Day Sep. 4, 2023
Columbus Day Oct. 9, 2023
Veteran’s Day Nov. 11, 2023
Thanksgiving Nov. 23, 2023
Christmas Dec. 25, 2023

How Do I Calculate the Years Duration In Excel?

In a new cell, all you need to type in =DATEDIF(A1,B1,”Y”). The “Y” indicates that you had the information, which was reported in years. This will provide 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.


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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