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How to use Date & Time values in Excel – 10 + 3 tips

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Using date & time values in Excel

Knowing how to use Excel date values can help you save a ton of time in your day to day spreadsheet chores. Let us prepare for your date with the sheet using these 10 handy tips.

Before jumping on to the tips, it helps to know how excel represents the date and time.

Microsoft Excel stores dates as sequential numbers … January 1, 1900 is serial number 1, and 28 July, 2021 is serial number 44405 because it is 44,405 days after January 1, 1900. Excel stores times as decimal fractions because time is considered a portion of a day.

So you see, Date and Time are in fact numbers in Excel. Just enter a date in your excel sheet and format it as number to see its equivalent numeric value. If a date is 29-July-2021 and Excel represents it as 44406.

Similarly, 9PM on 29-July-2021 is represented as 44406.875

How-to use Excel date values and formulas

Now that you know the little secret behind date / time, lets move to the 10 tips.

1. Test whether a date is future or past

You can find whether a date is past or future or today using simple if formula like: =if(this_date=today(),"Today",if(this_date < today(),"Past","Future"))

today() is the spreadsheet function using which you can find today’s date.

2. Find the number of days between two dates

Since dates are represented as sequential numbers in excel, in order to find out how many days are between any given 2 dates, just subtract one from another. For eg. you can use =today()-date(1947,8,15) to find how many days since India’s independence (August 15, 1947).

3. Formatting dates

Having date / time in the sheet is not enough if you can not make it look like the way you want. For eg. you may want to show date as “Wednesday, 28 July, 2021”. You can use cell formatting to do this. Just select the cell with date and hit ctrl+1 and in the “Number” tab select “Custom” as category and mention “dddd, dd mmmm, yyyy” as format string.

Try these other date formats as well.

formatting date and time values in Excel

Learn more about custom cell formatting.

4. Auto-filling only weekdays

Fill weekdays when entering days

We all know that in order to fill a series of dates in Excel sheet, you just need to enter first few dates and then select the range and drag to auto fill the selection with rest of the dates. But what if you need to fill only weekdays?

You can do that easily with Auto fill option – “weekdays only” as shown on the right. learn more.

5. Find out the day of week from a given date

Finding whether a day is weekend or weekday is useful if you are making project plans or resource allocation sheets. You can do this by simply using weekday() function. For eg. =weekday("07/28/2021") would return 4 (Excel, by default starts the week at Sunday, hence Wednesday is indicated as 4).

If you would like to start the week with Monday like most of us do, use =weekday("07/28/2021",2).

6. Highlight weekends using conditional formatting

Often when you are making project plans or reports, it helps if the weekends or after office hours can be grayed out. You can do this easily with conditional formatting as shown below:

highlight weekends

In order to do this, we can test whether a given a day is weekend or not in conditional formatting by =WEEKDAY(this_date,2)>5 as weekday() returns 6 and 7 for Saturday and Sunday.

You can use similar logic to highlight after office hours (before 9AM or after 5PM) for time values. Learn these 5 tips to master conditional formatting.

7. Adding / Subtracting dates

Since Excel dates are nothing but numbers, you can find out the difference between two given dates by just subtracting one from another. For eg. =DATE(2021,7,31)-DATE(2021,7,1) will return 30

In order to add n number of days to a given date, you can just add that number to given date. For eg. ="07/20/2021"+26 will return 08/15/2021

8. Ensuring a valid date or time is entered in a cell

When sharing your sheets with others to enter some data, it may be useful if you can restrict them to enter only valid date values in cells that require date value. You can do that using cell data validation feature in excel. Just select the cell to which you want to apply date / time validation, go to data ribbon > validation and set type as “Date” or “Time” and specify criteria.

data validation rule to allow dates only in 2021 (any year)

For example, you can specify criteria like the one above to ensure that date entered is in year 2018. What more, using message option of data validation settings you can even show messages like this:

date rule for data validation - error message

9. Insert today’s date, current time using key board shortcuts

Just go to the cell where you want to insert date and press ctrl+;

To get current time, use ctrl+shift+; ( thus ctrl+: )

Btw, if you are planning to get today’s date or current time using formulas, you can use today() and now(). Also learn these 11 very useful excel keyboard shortcuts.

10. Top Date functions for you

Excel has many Date & Time functions. Here is a list of some of the most important ones to help you use date values in Excel.

Date & Time formulas

To getUse thisExample ResultFunction used
Day of week numberWEEKDAY(date)4WEEKDAY()
Month numberMONTH(date)7MONTH()
YearYEAR(H3)2021YEAR()
Day numberDAY(date)28DAY()
Name of the monthTEXT(date,"MMMM")JulyTEXT()
Same day, next monthEDATE(date,1)28 August 2021EDATE()
End of the monthEOMONTH(date,0)31 July 2021EOMONTH()
Current dateTODAY()28 July 2021TODAY()
7 days from todayTODAY()+74 August 2021TODAY()+7
Gap between two datesTODAY()-DATE(2021,1,1)208- (minus)
5 working days from nowWORKDAY(TODAY(),5)4 August 2021WORKDAY()
Number of working days in a monthNETWORKDAYS(DATE(2021,7,1),DATE(2021,7,31))22NETWORKDAYS()

That is all, with these 10 tips I hope I made your date with that spreadsheet is made little exciting.

3 Important Date formulas for finance & accounting people

If you work in finance or accounting professions, using dates is an important part of your job. Apart from all the above tips, you also need to learn how to calculate:

  1. Quarter from a date (both calendar & financial)
  2. First working day of a month
  3. Last working day of a month

See this short video to understand how to calculate these (watch it on my YouTube channel)

Download the file demoed in the video.

Common problems when working with dates in Excel

When using date & time related values or formulas in Excel, often you might notice some problems. Use this check list to fix the problem.

  1. Excel shows ##### instead of date or time values
    This can happen if your cell is too small to show the value. Try adjusting column width.
    This can also happen if you use incorrect values as date & time. For example, if you try to format negative numbers as date, you will see #####
  2. Excel cannot understand my date
    When trying to convert a cell or value to date, sometimes Excel cannot understand your input. This is because Excel relies on your regional settings to understand dates. So if your usual date format is mm/dd/yyyy, then Excel expects the cells (or values) to have same format in order to convert them to dates. If you have dd/mm/yyyy values, then Excel may not convert the dates. To fix the problem, read extract dates from text tutorial

Download Date How-to & Tutorial Workbook

Click here download example workbook with several date calculations and format detail. Play with it to learn more.

Learn more about Excel Date & Time functions

Got a problem working with dates? Post it in comments

If you have any date or time related issues, please post a comment so our community or I can help you. Got an interesting tip or formula about working with dates? Please do share it so I can learn from you.

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99 Responses to “How to use Date & Time values in Excel – 10 + 3 tips”

  1. [...] Date with my sheet - 10 tips on using date / time in excel (tags: excel totw) Posted in Uncategorized | [...]

  2. [...] More on date / time: 10 tips on using, formatting date / time in excel. [...]

  3. Vijay Sharma says:

    Hi Chandoo,

    Since this article was for Dates, below are 2 easy ones to calculate the Start and End of Month. (without using the EOMONTH formula as available in Analysis Toolpak).

    In Cell A1, put any date
    then in the cell where you would want the Start of Month put the below formula
    1. Start of the Month
    =DATE(YEAR(A1),MONTH(A1),1)

    2. End of Month
    =DATE(YEAR(A1),MONTH(A1)+1,0)

    Hope this would help a lot who were dependant of EOMONTH..

    cheers
    ~Vijay

  4. David B says:

    I run a trolley tour business and need to set up a data base to track tickets sold by mutable vendors (from store, on the street ,etc)and by class ( adult, senior,child and discounts ) can you help or direct me to one that could?

  5. Glenn says:

    I know how to write macro's for excel, but I have 1 issue that I cant figure out and would appreciate some help.
    I want to key a range of dates, (7/1/09-7/12/09) then write a macro to go find the info for that range and bring it back to my spread sheet.

    Thanks for any help....

  6. Chandoo says:

    @Glenn: you can try a user defined function if the information you want to gather can be derived only from the 2 dates entered. You can write a macro, if you need to refer to other ranges in the workbook to gather the info based on the dates entered. I am not sure what you meant by "go find the info for that range". May be if you tell what you are trying to find, I can suggest the approach for writing a macro...

  7. [...] Important excel formulas: IF and Then, Vlookup, Offset, Sumif, Countif, Working with date and time [...]

  8. [...] Tips on using date & time in excel, List of excel date & time formulas, More excel quick tips [...]

  9. sekhar says:

    talking about dates, therz a formula that i use very frequently to calculate the difference between two dates.
    its not documented in 2007 though

    =DATEDIF(START_DATE,END_DATE,"Y") - gives you the years
    =DATEDIF(START_DATE,END_DATE,"YM") - remaining months
    =DATEDIF(START_DATE,END_DATE,"MD") - remaining days

    im sure you'll know this. wonder why it isnt documented. works fine with 2003 and 2007

  10. Ray Solanki says:

    Help please... I have two dates eg: 1/8/10 - 10/8/10 and i would like to know the number of Fridays and Mondays in any given period

  11. Hui... says:

    Ray

    Try the following user defined function:
    ===

    Function NoMonFri(uStart As Range, uEnd As Range, Optional uType As Integer) As Double
    Count = 0
    For i = uStart To uEnd Step 1
    If Weekday(i) = 2 Or Weekday(i) = 6 Then Count = Count + 1
    Next i
    If uType = 1 Then
    If Weekday(uStart) = 2 Or Weekday(uStart) = 6 Then Count = Count - 1
    If Weekday(uEnd) = 2 Or Weekday(uEnd) = 6 Then Count = Count - 1
    End If
    NoMonFri = Count
    End Function

    ====
    Copy the above into a Code Module
    To use just enter
    =NoMonFri(A1, A2) or
    =NoMonFri(A1, A2,1)
    Where A1 & A2 are the Start and End Dates (inclusively)
    The use of the optional 1 will Exclude the Start and End dates

  12. Chandoo says:

    @Ray... You can also do this using SUMPRODUCT (ahem)

    Assuming first date is in C6 and second date is in C7,

    =SUMPRODUCT(--(MOD(WEEKDAY(ROW(INDIRECT(C6&":"&C7)),2),4)=1))

    Will give you the number of Mondays and Fridays between C6 and C7 (including both days)

    Also, checkout NETWORKINGDAYS() UDF for more complicated counting... http://chandoo.org/wp/2009/06/09/networkingdays/

  13. [...] Process your data: Assuming your data looks like what I shown to left, just use simple formulas to make it look like the table to right. [related: how to work with dates & times in excel] [...]

  14. Javed Iqbal says:

    very useful tip, thanks alot

  15. Chandra Shekar B says:

    Hello Chandoo,

    How to convert no into time. for ex: 3600(In Seconds) into 1:00:00

    Thanks,

    Chandra Shekar B

  16. Hui... says:

    @Chandra
    Times are a fraction of 1
    So 6am is 0.25
    12 noon is 0.5
    6pm is 0.75
    So convert hrs and mins to a fraction of 24 hrs
    1 Hr = 1/24
    3600 seconds = 3600/(24*3600)
    etc

  17. Chandru says:

    Hello Hui,

    Thanks a lot 🙂

  18. Patrick says:

    Hello,

    I cant get Point 6 above to work (highlighting weekends).

    Is there an actual example I can see in action anywhere?

    Otherwise a very helpful and informative website.

    Regards,

    Patrick

  19. Avinash says:

    Hi Chandoo,

    When discussing about time.. I have one question too. Basically, I have one sheet in which we enter "Shift IN" & "Shift OUT" times as "hh:mm" format in A and B columns and next columns C & D pulls the scheduled and present count of agents from other sheet by VLOOKUP-ing times as

    IN time (hh:mm) - OUT Time (hh:mm). For eg; 03:30 - 12:30

    Columns A and B have been validated to accept only values between 00:00~23:30 (half hour intervals). and when pasting data, the values are usually accepted and I don't get any errors of validation.
    But, when performing vlookup to get the number of scheduled agents say as of the time interval 03:30, I get an #N/A error. I have confirmed ranges are all fine, but what I found is that the time although shows same but they are actually of different days. Say for eg;

    41023.39583 gives 9:30
    41024.39583 gives 9:30 too..

    Validation is accepted as time is same, and it works fine if I select the time interval from the validation list. So, was wondering, if I can select the same interval from the list using VBA.. so that whatever the time intervals gets updated, I just need to run a macro to automatically select the interval from the validation list.. I have come across that we can use Cell.Validation.Formula1 in some manner to get the item from list.. but it would take the number of the item in the list.. wondered if I could get the item through text. Any ideas to accomplish this task?

    Regards,
    Avinash

    • vishwanatha says:

      in time - 9:30 am on 11/24/2015
      out time - 6:30 am on 11/25/2015

      I have to calculate total hours worked.

      Tell me the formula to calculate the total hours, please.

  20. sheila villena says:

    hi, 

    can you help me in, i just want to know how will i get the corresponding DAY when i entered a specific DATE?

    Thanks,

    Sheila 

    • Chander J says:

      Hi,

      Following could be a solution for findinng out correspoinding Day, Month & Year to a Date:

      =TEXT("CELL ADDRESS WHERE DATE IS PLACED","DDDD") ..... For Day

      =TEXT("CELL ADDRESS WHERE DATE IS PLACED","MMMM") ..... For Month

      =TEXT("CELL ADDRESS WHERE DATE IS PLACED","YYYY") ..... For Year

      One can also customized the view by reducing keywords which will promopt to the following results : Mon, J, Jan, 2007, 07 etc

  21. Navin says:

    hi,
    sir can u help me,
    how to set a validity period & date of time in microsoft excel.

    eg:- suppose i m using a file sheet and setting a date of 01.04.2012, time 12.00am & wan't dat the sheet should stop working in 1 month  date & time ( 30.04.2012 ).

    eg :- suppose we are going internet cafe dere we are taking a browsing of 1hour time, as we r close 2 our time d browsing stop working.

    in dis way i wan't sheet to be set by date & time.

    so pls help me how to do.

    thanks,
    navin.
     

  22. Suyash says:

    Hi,
    Sir ur article is very helpful....Thnaks for that but i need ur help in this one. i have a monthly report workbook and the sheets are saved by date of that month. I have two cells FromDate and ToDate through which opening and closing stock is calculated(using =SUM('01-09-2012:25-09-2012'!D7)+ SUM('26-09-2012:30-09-2012'!D8)) .....Please give me a formula when i will enter any date in ToDate  or FromDate cell it will automatically change the other cells formula so to give me sum.
    please help me
    thanks
    Suyash

  23. Azwa says:

    Hi Mr. Chandoo,

    I have 1 question. I have 1 pivot table, successfully done with your guidelines, but how to set Sunday as the start week? means the start day is Sunday, and the end day of the week is Saturday.

    TQ in advance. 
        

  24. Charlotte says:

    can someone please tell me that if i want the date of the month to appear on each sheet of my workbook how do i do it by itself? i mean the workbook is of meeting room bookings... so i want to print out sheets date wise for a whole year/

  25. [...] So the formula for end time cell is =start-time + duration-minutes / 24 / 60. Note: We need to divide by 24 & 60 because in Excel each day 1 number, each hour is 1/24th and each minute is 1/24/60th. [learn more about Excel dates] [...]

  26. niyas says:

    dear friends, please help me to calculate actual time within the range while actual time more or less of range?

     
     
     
     

    TIME IN
    TIME  OUT
    ACTUAL HRS
    ACUTAL HRS WITHIN RANGE (7:30:00 to 18:00:00)

    7:15:00
    18:15:00
    11:00:00
    ?

    7:45:00
    17:00:00
    9:15:00
    ?

     
     
     
     

  27. Saransh says:

    If I have dates in Indian format dd-mm-yyyy, excel is not recognizing the same and instead treating the same as mm-dd-yyyy so a date mentioned in Indian system as 09/06/2013 is being treated as 6-Sep-2013 whereas it actually represents 9-Jun-2013.
    Can I convert these dates in Indian format to corrected dd-mmm-yyyy system?

  28. maged says:

    Chandoo,

    Please i need an advise ASAP i have been using this statement and it cant help

    if(and(c1>=a1:a144,c1<=b1:b144),"yes","no"))

    and it just works for the first 2 values c1, c2 and doesn't fit for the others.
    the case is i have more than one event at the same video and i need to confirm that no event was taken unless it is between start and end.

    here are some samples:

    Start dtime End Dtime Event Dtime
    16/09/2013 22:13:34 16/09/2013 22:14:18 16/09/2013 22:13:38
    16/09/2013 22:15:57 16/09/2013 22:24:30 16/09/2013 22:16:02
    16/09/2013 22:24:30 16/09/2013 22:33:49 16/09/2013 22:17:32
    16/09/2013 22:33:53 16/09/2013 22:35:05 16/09/2013 22:19:02
    16/09/2013 22:35:05 16/09/2013 22:39:57 16/09/2013 22:20:02

    So as you can see there are more than one event between one start and end dtimes

    thanks guys

  29. Chandresh says:

    Hi Chandoo,

    I have an activity tracking sheet, in which column A has activity A, B, C, D & E and column B has start date, column C has start time, column D has end date & column E has end time. Now what i am trying to do is that suppose activity A starts on 31-Mar 9:00 AM and finishes an 4-Apr 5:00 PM and Activity B starts only after A completes, but if suppose Activity A is delayed by say 1 hour, then activity B, C, D & E which are all dependent on each other will also be delayed by 1 hour, i want to create a template in excel, could you please help?

    thanks

    Chandresh

  30. […] Day 32 Date and time arithmetic - The symbols / and – need to be used when inputting dates and Excel has the capability to add dates and times together too. Follow the Excel Easy article here on how http://www.excel-easy.com/functions/date-time-functions.html Chandoo also has some Top 10 tips too http://chandoo.org/wp/2008/08/26/date-time-tips-ms-excel/ […]

  31. Rokon says:

    Hi,
    What will b the formula to get the date more than 3 yrs from the present date ?

    Example : today is 16-05-2014 (D-M-Y) then three yrs later what will be the date.

  32. Rokon says:

    Hi,
    What will b the formula to get the date more than 3 yrs from the present date ?
    Example : today is 16-05-2014 (D-M-Y) then three yrs later what will be the date.

  33. chetan says:

    hi..i want to restrict excel from counting non working time.... so i can prepare end dates for a PROJECT if i have total working hours required for my project..

    thank for reply if any....

  34. Kalaivanan says:

    Hi,
    Good Morning,
    Please use the formula for the below mentioned format in excel.
    Formula :- =TEXT(H3,"dd-mmmm-yyyy").
    Format :- 17-September-2014

  35. Andres Parra says:

    I'm an evaluator and i evaluate about 20 people everymonth between 6-10 times each depending on their performance. i track my work in excel by adding the dates i did each peorson. The only rule that i have its that i cant evaluate a person back to back so i have to wait at least one day in between each evaluation. is there a formula where excel would not allow me to enter a date if its one day after the date of the cell to the left?

  36. jayson says:

    Could anyone please help me. I have not been able to find a format that I need. I need to subtract a value everyday. Example. If I have 365 dollars and I would like Excell to subtract 1 dollar everyday for a year I would have 0 dollars left at the end. Or even 7 dollars a week would work for me. Could anyone please help me on this formula. Thanks

  37. Laly says:

    Is there a simple way (no function) to define a formula in a cell like =F(22/08/2014) ?

    Currently, i put the date 22/08/2014 in a cell eg. B2 and do my formula a =F(B2).

    Thanks

  38. BOOSTSATHIS says:

    Hai,

    I am sathis Kumar , i want to subtract two dates in xl sheet from 05/11/2013 to 30/04/2014 . now i want two days between how many month

    DOJ DOL Experince
    01/11/2013 05/06/2014 = (05/06/2014 - 01/11/2013)

  39. sankar says:

    Sir, I am trying to figure out how I can prevent user to enter duplicate date (in a pre booking template). The conditions are
    1) User A can put a single date or a date range
    2) Other user can't pick any day in between whatever user A had chosen
    3) A date picker calendar always shows only next 20 days date
    Can you please help me
    thanks in advance

  40. SM Frye says:

    Dear Sir,

    I am trying to update a 2014 historical facts calendar (It has a fact for every day of the entire year.) to reflect the new dates and days of the week for 2015. Is there a single formula I can enter to shift the dates ahead for the entire annual calendar, or do I need to execute a formula at each month's start? Either way, I am also in need of a formula to achieve this.

    Thanks for your help.

  41. […] Date with my sheet – 10 tips on using date / time in excel – Excel date time features are very handy and knowing them a little in depth can help you save a ton of time in your day to day spreadsheet chores…. […]

  42. LALIT SHARMA says:

    sir, suppose a date are given in a cell A1 = 20/04/2013... and suppose I want to add 10 years or 10 years and 07 month then how can I add the above ........ so that I Show 21/04/2023..... please justifiee.. sir...

    • Hui... says:

      @Lalit

      If A1 has a date 20/04/2013
      simply
      =A1+date(10,0,0) for +10 Years
      =A1+date(10,7,0) for +10 Years, 7 Months
      =A1+date(10,7,5) for +10 Years, 7 Months 5 days etc

      • Hui... says:

        @Lalit

        If you want to be more precise
        =A1+date(0,120,0) for +10 Years
        =A1+date(0,127,0) for +10 Years, 7 Months
        =A1+date(0,127,5) for +10 Years, 7 Months 5 days etc

  43. LALIT SHARMA says:

    and suppose... tow dates are given .. 20/04/2013 and 27/08/2003.. then how can seprate (-) kare so that the answer should be return in month.. ... it anser of both question are possible to sent the mention email then pls sent the answer in mention e-mail... .. I shall be highly obeliged ...

  44. Zarin says:

    Dear Sir,

    What is the formula using the Data Validation function at excel, to restrict a cell to accept only 2 days of the months (1st and 16th of the month)? Appreciate your kind help. Thanks.

  45. Thang says:

    Hi Pro, i want to find day if given date and weekday. example : Given Tuesday, 31week, 2015 year. Result is 28/7/2015, pls help me!

    • Ron says:

      please help
      i trying to write a formula for dates

      i have a initial date and i am trying to auto populate for 6 months out and one for 9 months out and have the 6 months out change color and when it is 9 months out change another color

      please help

  46. amy says:

    I have an Excel workbook for Study room bookings and within it I have 6 worksheets Monday thru Saturday. Without having to create 365 worksheets with individual dates on them what formula can I print these worksheets with the dates for the remaining days of the year automatically populated or is it possible?

  47. Elyse says:

    Is there a way to take 2 dates and subtract the newest date from the oldest to get the number of days difference? I tried the one that it says on this page but it didn't work.

  48. Suresh Ramachandran says:

    how to highlight days a month which is greater than 10th of every month

  49. Jenny says:

    Hi,

    How can 1 cell can put 2 dates by date format.
    I have the problem of 1 customer make 2 times payment.
    I can only record as 01/06/2016 & 02/06/16.
    The problem is when i filter that cell can't appear

    • Hui... says:

      @Jenny
      It is poor practice to store multiple records in one cell
      It is much easier to store multiple records ion multiple rows
      That also allows flexibility in reporting

      When entering data in a record that is mostly similar to the record above, you can use the Ctrl+D shortcut, This duplicates the cell directly above you speeding up data entry

  50. piecevcake says:

    Hello,
    Could you please tell me the solution to this? I have spent months, years, looking for it...
    When I press ctrl+; to enter the date in a cell, I want it to enter d/M/yy. My short date in windows regional settings is d/M/yy. Excel enters d/M/yyyy. The cells must be formatted as text they cannot be formatted as date. I do not want to have to macro-enable my workbooks, There must be a setting in the registry to set this?

    Alternatively, how can I assign that key to my own shortcut for a macro to enter NOW with custom date format? Can't find that either!
    I hope you can help!
    Many thanks

  51. NIRAJ says:

    how to shift date to the next working day if time goes after the working hour. if cell a1 has reference date and time i.e. 04/02/2017 12:30:00
    and cell b1 has working duration i.e. 7 hours . it shows in cell C3 04/02/2017 19:30:00 but 19:30:00 is not our working time. i want to show the value of plan date as 05/02/2017 11:30:00 . working time id 09:00:00 to 17:00:00

    Thanks

  52. Ernst says:

    No Comments at this time

  53. ANAND says:

    I have to develop Calendar in Excel considering Monday being the First day of week . How I can develop the same ? Please provide me guidance .

  54. Kirst says:

    Hi Chandoo!
    I export incident data daily to Excel 2016 and the dates are text (e.g. 8 Apr 2018). I changed cell to short date field format, but it still recognises this as text until I 'F2' then 'Enter' in each cell. Is there a more efficient way to do this; I have 3 columns of dates and about 1000 lines of data.
    I need it to be dates so I can then create pivot tables and charts from the data.
    Many thanks,
    Kirst.

  55. Mark says:

    some things I find useful:

    INT this will give you the date part of a datetime field
    MOD this will give you the time part of a datetime field

    if you had

    21/06/2018 10:25:00

    in cell a1

    then =INT(A1) would give you 21/06/2018
    and = mod(a1,0) would give you 10:25:00

  56. Sandeep Kothari says:

    oSUM!

  57. David says:

    The most important thing is if you do any calculations you need to be careful, given the vagaries of floating point math.

    e.g. depending on the day you choose, 4pm minus 3pm may be less than, equal to, or greater than one hour.

    Results in some infuriatingly subtle bugs when you forget!

  58. How do we know says:

    Wow! Came here from India's top blogs and this is superb! For some reason, dates have always confounded me in Excel and this was exactly what I needed - esp the section on adding and subtracting dates. Thanks a ton!

  59. Kale says:

    Hi,

    I have a mixed combinations of date format in one column i.e. 'dd/mm/yy' and 'mm/dd/yy'. How do I make them all in the same format, either all in 'dd/mm/yy' format, or all 'mm/dd/yy' format? Thanks in advance!

  60. Nirmal Christian says:

    want to conditional format and highlight all sunday and only second and fourth saturday in the list of given dates

  61. Bjarne says:

    Hey

    have can i work with this time format
    tt:mm:ss,000

  62. tom says:

    I want to develop a formula that will enter a an(hour and minute-not to change) in a cell when any data is entered in another specific cell. This will be used to determine lengths of time between three events
    Thanks,
    Tom

  63. AnnMarie Dixon says:

    I need to input in Excel formula for the date as follow: 2019/2020. The period for each year is July - June. I would need a formula that can change each period.

  64. AnnMarie Dixon says:

    I need to input in Excel formula for the date as follow: 2019/2020. The period for each year is July - June. I would need a formula that can change each period.
    The formula for date to change each year November 1, Year.

  65. Kamlesh Dantani says:

    Hi,
    Option 1 is very much helpful for me.
    I look this type of formula on google since many times but not satisfied.
    Finally I found it.
    Thank you ?so much,
    Kamlesh Dantani

  66. CoreyWilley says:

    Great website. These excel formulas, not just this page, have been super helpful while going through old spreadsheets and finding data. Thanks for the info.

  67. Very informative. Date functions are very important. I frequently visit your articles...awesome. Go ahead.

  68. Nice content, keep sharing with us.

  69. Sidharth Agarwal says:

    Hi Chandoo,

    Need a small help to build a formula where we can show the date of Monday i.e. start of week date from time stamp for eg "3/2/2022 9:21 PM" or either from "Week 10'2022" where Week is for entire year i.e till week 52/53 and "2022" represents the year

    Thanks in advance

    Best
    Sid

  70. Mac says:

    Hello,
    is the format of date case sensitive dd and DD are the same???

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