Excel Date Serial Number Calculator Average ratng: 7,0/10 4686 reviews

This tutorial will teach you a few quick and easy ways to find out how many days are between two dates in Excel.

Calculate number of days between dates in Excel with DATEDIF Another way to count days between dates in Excel is by using the DATEDIF function, which is specially designed to work out the date difference in various units, including days, months and years. Date System in Excel. An Excel date is simply a serial number. The earliest date that Excel can understand is January 1, 1900. This date has the serial number of 1. January 2, 1900, has the serial number of 2; January 3, 1900, has the serial number of 3 and so on. The last date Excel can understand is December 31, 9999. How to Automatically Add Serial Numbers in Excel. Experts know the importance of serial numbers. It contains the current date and time, and we use it to capture completing. Insert Square Root Symbol: Once you calculate a square root from a number, the next thing you can do is to. Delta Symbol in Excel.

Are you wondering how many days between two dates? Maybe, you need to know the number of days between today and some date in the past or future? Or, you just want to count working days between two dates? Whatever your problem is, one of the below examples will certainly provide a solution.

  • Convert an Excel Number to Date in A Single Step When It Represents a Serial Number Convert a Number that is a Serial Number to a Date by applying it Date Format. In detail; use the Format Cells dialog, press CTRL + 1 then select Date category and assign the Format Type (see graphic 1 and graphic 3).
  • Jun 23, 2016 - Excel stores dates as sequential numbers that can be used in calculations. By default, Excel stores the date January 1, 1900 as serial number 1.

Days between dates calculator

If you are looking for a quick answer, just supply the two dates in the corresponding cells, and our online calculator will show you how many days there are from date to date:

Curious to know the formula that has calculated your dates? It's as simple as =B3-B2 :)

Below you will find the detailed explanation on how this formula works and learn a few other methods to calculate days between dates in Excel.

How many days between dates calculation

The easiest way to calculate days between dates in Excel is by subtracting one date from another:

For example, to find out how many days are between dates in cells A2 and B2, you use this formula:

=B2 - A2

Where A2 is an earlier date, and B2 is a later date.

The result is an integer that represents no. of days between two dates:

How this formula works

As you probably know, Microsoft Excel stores dates as serial numbers starting on 1-Jan-1900, which is represented by the number 1. In this system, 2-Jan-1900 is stored as the number 2, 3-Jan-1900 as 3, and so on. So, when subtracting one date from another, you actually subtract the integers representing those dates.

In our example, the formula in C3, subtracts 43226 (the numeric value of 6-May-18) from 43309 (the numeric value of 28-Jul-18) and returns a result of 83 days.

The beauty of this method is that it works perfectly in all cases, no matter which date is older and which is newer. If you are subtracting a later date from an earlier date, like in row 5 in the screenshot above, the formula returns a difference as a negative number.

Calculate number of days between dates in Excel with DATEDIF

Another way to count days between dates in Excel is by using the DATEDIF function, which is specially designed to work out the date difference in various units, including days, months and years.

To get the number of days between 2 dates, you supply the start date in the first argument, end date in the second argument, and 'd' unit in the last argument:

DATEDIF(start_date, end_date, 'd')

In our example, the formula goes as follows:

Excel date serial number conversion

=DATEDIF(A2, B2, 'd')

Unlike the subtraction operation, a DATEDIF formula can only subtract an older date from a newer date, but not the other way round. If the start date is later than the end date, the formula throws a #NUM! error, like in row 5 in the screenshot below:

Note. DATEDIF is an undocumented function, meaning it is not present in the list of functions in Excel. To build a DATEDIF formula in your worksheet, you will have to type all the arguments manually.

Count days between dates with Excel DAYS function

The users of Excel 2013 and Excel 2016 have one more amazingly simple way to calculate days between two dates - the DAYS function.

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Please pay attention that compared to DATEDIF, a DAYS formula requires the arguments in the reverse order:

So, our formula takes the following shape:

=DAYS(B2, A2)

Like subtraction, it returns the difference as a positive or negative number, depending on whether the end date is greater or smaller than the start date:

How to calculate number of days between today and another date

In fact, calculating the number of days from or before a certain date is a particular case of 'how many days between dates' math. For this, you can use any of the formulas discussed above and supply the TODAY function instead of one of the dates.

To calculate the number of days since date, i.e. between a past date and today:

TODAY() - past_date

To count the number of days until date, i.e. between a future date and today:

As an example, let's calculate the difference between today and an earlier date in A4:

=TODAY() - A4

And now, let's find out how many days are between today and a later date:

How to calculate working days between two dates in Excel

In situations when you need to get the number of working days between two dates, use the NETWORKDAYS function:

NETWORKDAYS(start_date, end_date, [holidays])

The first two arguments should already look familiar to you, and the third (optional) argument allows excluding a custom list of holidays from the day count.

To find out how many working days are between two dates in columns A and B, use this formula:

=NETWORKDAYS(A2, B2)

Optionally, you can enter your holiday list in some cells and tell the formula to leave out those days:

=NETWORKDAYS(A2, B2, $A$9:$A$10)

As the result, only business days between two dates are counted:

Tip. In case you need to handle custom weekends (e.g. weekends are Sunday and Monday or Sunday only), use the NETWORKDAYS.INTL function, which allows you to specify what days of the week should be considered weekends.

Find number of days between two dates with Date & Time Wizard

As you see, Microsoft Excel provides a handful of different ways to count days between dates. If you are not sure which formula to use, let our Date & Time Wizard do the how-many-days-between-two-dates calculation for you. Here's how:

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  1. Select the cell in which you want to insert the formula.
  2. On the Ablebits Tools tab, in the Date & Time group, click Date & Time Wizard:
  3. In the Date & Time Wizard dialog window, switch to the Difference tab and do the following:
    • In the Date 1 box, enter the first date (start date) or a reference to the cell containing it.
    • In the Date 2 box, enter the second date (end date).
    • In the Difference in box, select D.

    The wizard immediately shows a formula preview in the cell and the result in the Difference in box.

  4. Click the Insert formula button and have the formula inserted in the selected cell. Done!

A double-click on the fill handle, and the formula gets copied across the column:

To display the date difference in a slightly different way, you are free to choose any of the additional options:

  • Show text labels - the word 'days' will appear along with the number, like shown in the screenshot below.
  • Do not show zero units­ - if the date difference is 0 days, an empty string (blank cell) will be returned.
  • Negative result if Date 1 > Date 2 - the formula will return a negative number is the start date is later than the end date.

The screenshot below shows a couple of additional options in action:

This is how you calculate the number of days between dates in Excel. If you'd like to test our Date & Time Formula Wizard in your worksheets, you are welcome to download 14-day trial version of Ultimate Suite, which includes this as well as 60+ other time-saving tools for Excel. included. If you like the tools and decide to get a license, don't miss the 15% off coupon code that we provide exclusively to our blog readers: AB14-BlogSpo

To have a closer look at the formulas discussed in this tutorial, you are welcome to download our sample workbook to How Many Days Between Dates.

I thank you for reading and hope to see you on our blog next week!

See also

>> QUICK NAVIGATION
  • 1. Convert date to text
    1.1 In mm/dd/yyyy format
    1.2 In mmddyyyy format
    1.3 In other formats
  • 2. Convert date to number
    2.1 In 5-digit format
    2.2 In mmddyyyy format

How to convert date to number string or text format in Excel?

In this tutorial, I will introduce several methods on solving different cases about converting date to number or text format in Excel.

  • 1. Convert date to text
    1.1 Convert date to text in mm/dd/yyyy format
    1.2 Convert date to text in mmddyyyy format
    1.3 Convert date to text in other formats
  • 2. Convert date to number
    2.1 Convert date to number in 5-digit format
    2.2 Convert date to number in mmddyyyy format

This section provides the methods on converting date to text in Excel.

To convert date to text, you just need one formula.

Formula: =TEXT(date,”date_format”)

Reference: date: the cell with date you want to convert to text
date_format: the format you want to display after converting date to text

In below cases, I will tell you how to use this formula.

1.1 Convert date to text in mm/dd/yyyy format

For example, convert date in Cell A3 to mm/dd/yyyy, use the formula
=TEXT(A3,'mm/dd/yyyy')
press Enter key

If you want to convert date in Cell A8 to dd/mm/yyyy, use this formula
=TEXT(A8,'dd/mm/yyyy')
press Enter key

1.2 Convert date to text in mmddyyyy or ddmmyyyy format

If you want to convert date in Cell A13 to text, but in mmddyyyy format, type this formula
=TEXT(A13,'mmddyyyy')
press Enter key

If you want to convert date in Cell A18 to text in ddmmyyyy format, type this formula
=TEXT(A18,'ddmmyyyy')
press Enter key

1.3 Convert date to text in other formats

Actually, whatever text format you want to convert date to, just type the format you want between quotation marks in formula.

Date(A3)12/23/2019
Formula=TEXT(A3,'mm-dd-yyyy')=TEXT(A3,'mm/dd')=TEXT(A3,'dd')=TEXT(A3,'d/m/y')
Result23-12-201923/122323/12/19

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2. Convert date to number

In this section, I provide methods on converting date to number in 5-digit format of mmddyyyy format.

2.1 Convert date to number in 5-digit format

If you want to convert date to number in 5-digit format, just do as these:

1. Right click at the cell which contains the date you want to convert to number, and in the right-click menu, select Format Cells common.

2. In Format Cells dialog,under Number tab, select General from the pane of Category.

3. Click OK. The date in selected cell has been converted to number string in mmddyyyy format.

2.2 Convert date to number in mmddyyyy or ddmmyyyy format

If you want to convert date to number string in mmddyyyy or ddmmyyyy format, you also can apply the Format Cells function.

1. Right click at the cell which contains the date you want to convert to number, and in the right-click menu, select Format Cells common.

2. In the Format Cells dialog, under Number tab, select Custom from the Category pane, then go to right section, enter mmddyyyy into the Type textbox.

3. Click OK. The date in selected cell has been converted to number string in mmddyyyy format

If you want to convert date to number string in other format, you can take below list as reference.

Date2/23/2019
Format Cell as customddmmyyyyddmmyymmyyyyyyyymmdd
Display2302201923021902201920190223

3. Convert date to month/day/year or other date formats with clicks

If you want to convert date to month, day, year or other date formats quickly, the Apply Date Formatting utility of Kutools for Excel will be a good choice to use.

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After free installing Kutools for Excel, please do as below:

1. Select the cells which contains the dates you want to convert to other date formats.

2. Click Kutools > Format > Apply Date Formatting.

Excel date serial number format

3. In the Apply Date Formatting dialog, select the date format you want to use in Date formatting pane, at the meanwhile, the converted result will be previewed in right Preview pane.

4. Click Ok, then dates you selected have been converted to the date format you selected.

Convert date to multiple Individuality date formatting with clicks


Excel Date Serial Number Calculator Free

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Excel Date Serial Number Calculator Free

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  • These numbers 1532307209286 were converted by my partner to date 23-07-2018 00:53:29. Do you know how did it?
    • Hi, Isma, your number is unix timestamp, right? If so, this article can help you. https://www.extendoffice.com/documents/excel/2473-excel-timestamp-to-date.html#a3
    • To post as a guest, your comment is unpublished.
  • To post as a guest, your comment is unpublished.
    I don't understood!!
  • To post as a guest, your comment is unpublished.
    hello can you help me?
    i want to convert 20180107 to 07/01/2018
    • Hello, mat, you can use this formula =DATE(LEFT(A1,4),MID(A1,5,2),RIGHT(A1,2))
  • To post as a guest, your comment is unpublished.
    I am using a date 12 September 2018 I then convert it to 091218. I would like to use a concatenate function to add a 01 at the end, however when I do this the value keeps going to 43355. Is there any easy way to do this or is this even possible?? thanks in advance
    • Sorry, Jim, I do not understand your problem, could you upload a screenshot to describe your question?
  • To post as a guest, your comment is unpublished.
    Hello, I want to convert 1-Apr-20 to 20200401, how can i do it automatically? Thank you.
    • Hello,Kristina, you just need to format the cells to yyyymmdd in Format cells dialog, more detail please go to https://www.extendoffice.com/documents/excel/4165-excel-convert-mm-dd-yyyy-to-yyyymmdd.html