Syntax WEEKNUM (serial_number, [return_type]) The WEEKNUM function syntax has the following arguments: Serial_number Required. Here, first using the DAY function we get the value of a day of the date in Cell B5. But, what if we want to use thelast day of the month? There are two systems used for this function: System 1The week containing January 1 is the first week of the year, and is numbered week 1. Our videos are quick, clean, and to the point, so you can learn Excel in less time, and easily review key topics when needed. We can do it by going through some simple steps. Here are some format codes along with the type of result you will get when applied to cell A2: Note: Using this formula, your converted date is in text format, so you will see the results aligned to the left side of the cells. Do you have a method do go by calendar? If you work based on a date system where the week containing the 1st of January is considered week 1, use the following formulas: =DATE(A2,1,1) - WEEKDAY(DATE(A2,1,1),2) + (B2-1)*7 + 1, =DATE(A2,1,1)- WEEKDAY(DATE(A2,1,1),2) + B2*7. 05-11-2022 07-11-2022 Where A2 is the year and B2 is the week number. =DATE(A2,1,1)- WEEKDAY(DATE(A2,1,1),1) + B2*7. Technical details Change the date format Calculate a date based on another date Convert text strings and numbers into dates Increase or decrease a date by a certain number of days See Also Add or subtract dates Founded in 2007 by Eric T. Peterson, author of "Web Analytics Demystified", the company provides strategic guidance and tactical support to many of the best known companies in the world. First, we used the WEEKDAY function to find the number corresponding to the day of the week, assuming our week starts from Sunday. So no first Monday will be return on that month and the second Monday should return 6 Feb 2023 and fourth Monday will be 20 Feb 2023 and so on using the same algorithm for every month and every year. Thank you very much and have a good day :), Hello Claudine! In the 'By' section, deselect whatever is already selected (mine comes up with Months by default), and then select 'Days'. It is supposed to return a value of (week) 14 but all the calculations I have tried keep returning a value of (week) 15. Embed your Weeknum formula into the IF function like this: I have a similar question of Abid's. Using WEEKNUM Function to Convert Date to Week Number of Month in Excel, 2. In this section, we are giving you the dataset to practice on your own and learn to use these methods. Start date: Expecting output for Jan 3 - 9 as week #1, Jan 10 to 16 = week #2 and so on. Thank you! Date Year Wk Nm Wk Start Date Wk End Date Right-click on your selection and select Format Cells from the popup menu that appears. For the fully written out weekday ($A3 is the cell with 1/15/2013 in it you would just drag this formula down, or, if youre using an Excel Table, it would autofill): Note: If you simply want the date to bedisplayed as the weekday, you dont need a formula at all you can simply change the cell formatting to a custom format of dddd (for the full weekday) or ddd (for the 3-letter weekday). How to convert to date ? Thanks for contributing an answer to Super User! No, it's really not because I have NO IDEA how to do this!!!! On the other hand, using the same formula we got 2 as the week number for 5th September 2021. Morgan, Hello, I need a formula to sort out the weeks in sequent way .. meaning after week 1 I get week 10 and 11 etc.. how can I get week 1, then week 2 Please note that the formula returns the date as a serial number, and to have it displayed as a date, you need to format the cell accordingly. We couldn't imagine being without this tool! I believe the following formula will help you solve your task: =IF(MONTH(A2)>3,WEEKNUM(A2,2)-13,WEEKNUM(DATE(YEAR(A2),12,31),2)+WEEKNUM(A2)-13), Hello! Here are the steps to follow: Heres what you should get as the result: To understand how this formula worked, we need to break it down: Thus we get the day corresponding to the date in A2 (in our example) to be sat. I just realized my mistake -- I'm deriving the year from the date, rather than from the weekly period, which would be 2020-53, not 2021-53, for 1/1/2021 through 1/3/2021. In this short tutorial, we will briefly talk about the syntax and arguments of Excel WEEKNUM, and then discuss a few formula examples demonstrating how you can use the WEEKNUM function to calculate week numbers in your Excel worksheets. And then, make a list of week numbers in some other column (say, in column E) and calculate the sales for each week using the following SUMIF formula: In this example, we are working with a list of March sales, so we have week numbers 10 to 14, as demonstrated in the following screenshot: In a similar manner, you can calculate the sales average for a given week: If the helper column with the WEEKNUM formula does not fit well into your data layout, I regret to tell you that there is no simple way to get rid of it because Excel WEEKNUM is one of those functions that doesn't accept range arguments. So, we will have to construct our own formulas. First, sort your file in Ascending Date order and have your day column be in date format. Feel free to comment if something seems difficult to understand. =MAX(DATE(A2,1,1), DATE(A2,1,1) - WEEKDAY(DATE(A2,1,1),2) + (B2-1)*7 + 1), End date: bring the week number to a cell using formula A1=WEEKNUM(date) and concatenate that with the text "Week"(=CONCATENATE("Week",A1)). See screenshot: Thank you in advance for your help! I need to work out the week number from a specific date. Is there a way to convert a week number (i.e 19) to a date format (1/23/2022) given current date? However this does not take into account the calendar. You are probably talking about the formula that converts week number to date. by Svetlana Cheusheva, updated on March 22, 2023. Can you help please, hi i want formula that week start from april-16 and end to march-17 1-52 count. So, to convert a date to be the Saturday of the week the date falls in, use this formula (the +7 just keeps the converted value from being the Saturday of theprevious week): Its the same idea if you wanted to use the first day of the week, with the week defined as starting on Sunday: Obviously, you can use this basic formula for whatever week criteria you want. 26-02-2023 27-02-2023 When working with date-specific information, there might be instances where you need to find the day of the week corresponding to a date. Once again I'm the ONLY human on the ENTIRE PLANET who wants to have a cell with a Mon-Sun in date format in ONE CELL!!!!!! 1/4/2021 2021 1 1/4/2021 1/10/2021 Hello! Week-1,Day-2 Note. WEEKNUMtakes two arguments:a date, and (optionally)return_type, which controls the scheme used to calculate the week number. I was looking for this. 1. Incredible product, even better tech supportAbleBits totally delivers! Please check out this article to learn how to combine text with a formula-driven value. To match our financial year that we use here in Australia. Please remember that the above formula works based on the ISO week date system, where the week starts on Monday and the week containing the 1st Thursday of the year is considered week 1. Try using parameter 2 in the WEEKNUM function. I need to have 6 Sept to 12th Sept as Week 1, 13th Sept to 19th Sept as Week 2 and so on..How should I write the formula? Ron de Bruin's nice write-up on Excel week numbers. converting a week number to a date? But, we need to look at the day of the month and check if it is less than 15. Microsoft and the Office logos are trademarks or registered trademarks of Microsoft Corporation. In VBA I want to convert a date as 03/11/2017 (DD/MM/YYYY) into the week number for that date. Here's the syntax for the TEXT function: = TEXT (date, date_format_code) If row 2 is the topmost row with data, then of course it should be A2 and B2: =DATE(A2,1,1) - WEEKDAY(DATE(A2,1,1),1) + (B2)*7 + 1. How can I create a work schedule with following : 4days off , 5days on , 4 days off , 5 days on, 5days off , 4 days on , 5 days off, For a year , the working is like that . Then, we will subtract the values and add 1. This will return a number between 1 and 7. Sometimes, I work with that data at a daily level, but, often, I want to roll the data up by week, by month, or by some other time period. It chooses the sequencing of these numbers based on the day we want the week to begin from. This formula example is based on ISO week numbers, with a week starting on Monday. And, visit ExcelDemy for many more articles like this. Is it possible to use this function but have the week numbers start 1st July in the year? Simply minus 8 hour from your given date time. Why did DOS-based Windows require HIMEM.SYS to boot? =WEEKNUM(B3,1)-WEEKNUM(DATE(YEAR(B3),MONTH(B3),1),1)+1. Now you can go ahead and remove column A if you want to. The TEXT function applies the date_format_code that you specified on the provided date and returns a text string with that format. To determine the month number, use the MONTH function We will convert all the dates in the above sample dataset into corresponding days of the week. Adjacent to your chosen arbitrary date, create a vlookup formula. We simply use the first week of that month. Right-click on the column and form the popup menu that appears, press. Hi, I am having an issue and I do not understand why this is happening. 12/24/2020 2020 52 12/21/2020 12/27/2020 Consequently, the first Monday is always between December 29 and January 4. You can learn more about creating conditional formatting rules in this tutorial: Excel conditional formatting based on another cell value. 01-11-2022 07-11-2022 4 (weeks date gen.auto(sept 1st 2016) With 10-01-2016 Subtract the two week numbers and add one (so that the first week does not appear as zero). Genius tips to help youunlock Excel's hidden features. Then, we will subtract the values and add 1 to avoid getting the week number of month as 0. Ultimate Suite is a treasure chest of useful tools, That one program has given me years of convenience, Ablebits is a dream come true for any Excel user, This add-in is really valuable for a very reasonable cost. This system is the methodology specified in ISO 8601, which is commonly known as the European week numbering system. Example: in Microsoft Excel. Thank you. This make sense? The Excel ISOWEEKNUM function takes a date and returns a week number (1-54) that follows ISO standards, where weeks begin on Monday and week number 1 is assigned to the first week in a year that contains a Thursday. So, you have to subtract 7 days from January 5 and hence you get -2 in the first DATE function: Compared to the tricky formula you have just learned, calculating the End date of the week is a piece of cake :) To get Sunday of the week in question, you simply add 6 days to the Start date, i.e. This formula actually makes the value the weekday. Tq, Was looking on how to calculate the weeknum based on Nov'16 to Oct'17 as the financial year, need help? Which reverse polarity protection is better and why? Select a blank cell you will return the week number, enter this formula: =WEEKNUM (B1,1), and press the Enter key. For example, use DATE(2008,5,23) for the 23rd day of May, 2008. A number that determines on which day the week begins. Follow the steps given below to do it on your own. Use any of these ways to accomplish the result in this regard. For example, use DATE (2008,5,23) for the 23rd day of May, 2008. Here you go: How to Compare Two Columns in Excel (using VLOOKUP & IF), Multiple If Statements in Excel (Nested Ifs, AND/OR) with Examples, How to Center the Worksheet Horizontally on the Page in Excel, How to Merge First and Last Name in Excel, How to Remove Commas in Excel (from Numbers or Text String), Why does Excel Open on Startup (and How to Stop it), How to Unsort in Excel (Revert Back to Original Data), d one or two-digit representation of the day (eg: 3 or 30), dd two-digit representation of the day (eg: 03 or 30), ddd the day of the week in abbreviated form (eg: Sun, Mon), dddd full name of the day of the week (eg: Sunday, Monday). Meaning that for example Feb 2023, 1/2/2023 is Wednesday, and this is the first week. Hi all, 1 to 4 March 2021 should be the first week and 6 to 11 March 2021 should be the second week. I mean if I enter date it should give me work week number. Then, insert a blank column (say, a new ColA) for the weeks and make it to date format. So let's just go with that and say this is cell A2 and you type 4/28/13 into it. 1/2/2021 2021 53 1/3/2022 1/9/2022 . Ive put all of the examples in this post in adownloadable spreadsheetthat you can check out and play around with. Any ideas? Here, we extracted the day from the given date as 24 and the first day of the month the date falls within as 23. Learn more about Stack Overflow the company, and our products. I hope this will help, otherwise please do not hesitate to contact me anytime. Download 5 Useful Excel Templates for Free! Choose the account you want to sign in with. How to Convert Date to Serial Number in Excel? #1 - WEEKNUM Function: Calculate the Week Number of the Year We can use the WEEKNUM function to quickly determine how many weeks have elapsed from January 1st to a given date in the same year. 08-11-2022 14-11-2022 =DATE(A2,1,-2) << I just checked this, it receives the last tuesday of the previous year, and not the last monday. Hello MRRRR, There are a lot of them in the article. Your email address is private and not shared. If you follow the first method, we have shown you will get the week number from a date according to the calendar. Itll help me understand it better and find a solution for you. So, in this article, you will find 4 ways to convert date to week number of month in Excel. So if the week starts with 1 on Sunday for example, its just that day in week 1? See the WEEKNUM page for more information. Hopefully, the different approaches I described will trigger an idea or two for your specific situation. . A date within the week. Happy date converting! This function is, basically, a remainder function, and its main use is to calculate the remainder when one number is divided by another (for instance, =MOD(14,4) returns 2 because, when you divide 14 by 4, you get a remainder of 2). Hopefully, the WEEKNUM formulas you have learned today will prove useful in your worksheets. As you see, our formula consists of 2 parts: In the ISO week numbering system, week 1 is the week containing the first Thursday of the year. On step 1 of the wizard, select the Delimited file type and click Next. These functions aren't available in earlier versions. This should display the day of the week in short form, corresponding to the date in A2. The second issue is that the second week begins on Sunday, January 5th (cell J1) and ends on Saturday, January 11th (cell P1). The TEXT function is a great function to convert dates to different text formats. Hello! I don't see any pattern in your data. For example, instead of the date, you may want to know whether its a Monday or a Tuesday or any other day. Exactly! I used the formulas in the article Start Date Copy this to the rest of the cells in the column by dragging down the fill handle or double-clicking on it. You made my day. For reference, MONTH(plannedDate) returns the correct value between 1 and 12. I need excel formula to get one fixed string after every 3 weeks in calendar. Tags: Convert to Number in ExcelDATE FunctionDAY FunctionIF FunctionINT FunctionISOWEEKNUM FunctionMONTH FunctionROUND FunctionWEEKDAY FunctionWEEKNUM FunctionYEAR Function. So, if we wanted to convert a date to be the Saturday at the end of the bi-week period, it would be one of these two formulas (depending on which Saturday is the cutoff and which is the mid-period point): If you wanted to use the start of the period, with the week starting on Sunday, then it would be one of these two formulas: Again, it takes some experimentation if you want to adjust to other dates, but the 14 will not change as long as youre working on bi-weekly periods. Huh? Then right click on any of the dates and select 'Group', A dialogue box pops up. In real-life scenarios, the Excel WEEKNUM function is rarely used on its own. This is because our week starts on the first Thursday of the year. 15-11-2022 21-11-2022, Also the leap month of this year 2023 creates havoc The answer to your question is in this manual: How to convert week number to date. Hi! The easiest way to understand how this works out is to write out (or put in Excel) a series of dates and then write the numbers 1 through 7 as you go down the dates. WEEKDAY() doesnt work for this, because it doesnt tell you which of the two weeks a day falls into. Asking for help, clarification, or responding to other answers. Select the cells that hold each date by clicking and dragging your mouse over them. To do this, you can use the WEEKDAY() function. What differentiates living as mere roommates from living in a marriage-like relationship? I need a excel formula to do a weekly planning and should change the weeks automatically if it exceeds week 52 to week 1 ( if the plan ends somewhere next year) . Best regards, Since the rule applies to A2:B15, it highlights values in both columns. On the Data tab, find the Data Tools group, and click Text to Columns. =MAX(DATE(A2,1,1), DATE(A2,1,1) - WEEKDAY(DATE(A2,1,1),1) + (B2-1)*7 + 1), End date: Share Improve this answer Follow edited Apr 6, 2016 at 3:40 sampathsris 21.3k 11 69 98 answered May 24, 2014 at 19:55 Richard Kernick 1 The serial_num argument must have a . Number of the week in the year that 3/9/2012 occurs, based on weeks beginning on Sunday (default). Copy this columns formula results by pressing CTRL+C or Cmd+C (if youre on a Mac). Just one great product and a great company! 04-11-2022 07-11-2022 But can it be converted all at once to return "Week of Sep 20th" instead using the original date of Sep 23? In this case, If I select Jul-21-2020, I want to receive 25 while using WEEKNUM function. Here, you will find 5 different step-by-step explained ways to convert date to week number of month in Excel. If there is, please describe. I am passionate about learning new things and increasing my data analysis knowledge as well as critical thinking. So, if you subtract the WEEKDAY() value from the actual date, you will get the same value 7 days in a row, at which point the value will jump seven days. Thank you for the method. Therefore, it cannot be used within SUMPRODUCT or any other array formula like the MONTH function in a similar scenario. I'd just like to thank you for all of your work on this website. 07-11-2022 14-11-2022 The simple formula in the original solution would become: =CEILING ( (WEEKDAY (DATE (YEAR (A3)-IF (MONTH (A3)=1,1,0),2,1))+A3-DATE (YEAR (A3)-IF (MONTH (A3)=1,1,0),2,1))/7,1) Share Improve this answer Follow edited Aug 20, 2015 at 6:31 Syntax. my date is 23-SEP-2021 - i can use "=A2-WEEKDAY(A2,2)+1" to get the Monday date How to convert structured references in Excel to table references? In the next tutorial, we will talk about calculating age and years in Excel. Example 1: Convert Date to Abbreviated Day of Week. Please check out the following article on our blog, itll be sure to help you with your task: Calculate difference between two dates in days, weeks Then, this is the right place for you. Holidays Optional. Suppose, you have some monthly sales figures and you want to know the total for each week. Use Format Cells Option to Convert Date to Day of Week in Excel 1.1 Change Format from Context Menu 1.2 Change Format from Ribbon 1.3 Change Format with a Keyboard Shortcut 2. Your formula works perfectly fine until I required a change in the starting day from 06-11-2022 to be accounted on Monday 07-11-2022. Finally, we added 1 with the value to avoid the week number as 0. It is doing my head in. 12/22/2020 2020 52 12/21/2020 12/27/2020 I want WEEKNUM(plannedDate) to return the week number, but I am getting some sort of error. 1/8/2021 2021 1 1/4/2021 1/10/2021 Great article. Let us put the two functions CHOOSE and WEEKDAY together to convert date to day of the week. Please how can I calculate week 38 to months. I have cell criteria, A1 = year, B1 = month and C1 = week number. Thats right. =DATE (B5, 1, -2) - WEEKDAY (DATE (B5, 1, 3)) + C5 * 7+6 1.1 Mon-Sun Week (Starts from Jan 1) z o.o. 06-11-2022 07-11-2022 So the function: =CHOOSE(3, sun,mon,tue,wed,thu,fri, sat) will return tue, because its the third value in the list. Well, Excel dates are, under the hood, just numbers. Now, we will show you how to convert date to week number of month by applying the DAY and ROUNDUP function. Here's one way to do it using a helper column for Weeks, populating it with a formula to get the week, then pivoting by week (this works in Excel 2007 - I presume it would in 2010, as well). TIA. =MIN(DATE(A2+1,1,0), DATE(A2,1,1) - WEEKDAY(DATE(A2,1,1),1) + B2*7). So, if you are looking for a way to get a week number from a date, WEEKNUM is the function you want. For more details, see Ron de Bruin's nice write-up on Excel week numbers. Specify exactly what you want to get with your formula. if you apply =TEXT(A2, d) to the sample dataset, it will return 10. To convert a week number to a date, try this formula with WEEKDAY function: =MAX(DATE(YEAR(TODAY()),1,1),DATE(YEAR(TODAY()),1,1) - WEEKDAY(DATE(YEAR(TODAY()),1,1),2) + (A2-1)*7+1). Explore subscription benefits, browse training courses, learn how to secure your device, and more. Can I get some help on calculating the week number from 08/04/2016. My Excel life changed a lot for the better! Sometimes (again, company pay periods are a good example), rather than using a bi-weekly calendar, you want to use a bi-monthly calendar every date from the 1st through the 14th should be converted to the first day of the month, and every day from the 15th through the end of the month should be coded as the 15th. If I change the cell value C1 = 6 than formula return should be blank. Since the formula WEEKNUM refers to the date in cell B1, and is a Sunday, I omitted the type since the week begins on a Sunday, per Excel reference sheet: -> System 1: The week containing January 1 is the first week of the year, and is numbered week 1. Thank you. Ideal for newsletters, proposals, and greetings addressed to your personal contacts. You could also have any other format for the days in the list, for example, if you wanted to display just the first two letters for the days, you could have written the formula in step 2 as: If you wanted to make a to-do list, you could even have an activity for each day of the week. Here, to find the week number of 4th September 2021 we used the following formula and got 1 as the week number. . Ive just scratched the surface with possible date conversions in this post. The WEEKDAY function provides the number of the corresponding days. Im sorry but your task is not entirely clear to me. Dates should be entered by using the DATE function, or as results of other formulas or functions. I am using Excel 2013. Means week is calculated from Monday to Sunday. What does WC mean? As you remember, the previous formula works based on the ISO date system where the first Thursday of the year is considered week 1. Muchas gracias. What you do need to change are the selections for 'By' and 'Number of Days.'. Until now I have the following code: 'geting the date out of the string HeadlineTemp = Mid (VRHeadline, InStr (VRHeadline, " [") + 1, 10) 'switch "." For a week beginning on Sunday, omit the return_type argument: =WEEKNUM($A2)-WEEKNUM(DATE(YEAR($A2), MONTH($A2),1))+1. Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. =DATE(A2,1,1) - WEEKDAY(DATE(A2,1,1),1) + (B2-1)*7 + 1, End date: . For example, you can choose to display the word red if a value is 1, blue if it is 2, green if it is 3, and so on. Because of this issue, Week 1 does not exist and causes problems with futur weeks and years. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); ExcelDemy is a place where you can learn Excel, and get solutions to your Excel & Excel VBA-related problems, Data Analysis with Excel, etc. Solved my life - Thank you very much. 26-02-2023 27-02-2023 09-11-2022 14-11-2022 =DATE (A2, 1, -2) - WEEKDAY (DATE (A2, 1, 3)) + B2 * 7 Where A2 is the year and B2 is the week number. Applying DAY and ROUNDUP Functions in Excel, Step-03: Rounding Up Week Number of Month, 5. DATE(A1,MONTH(B1),1) - WEEKDAY(DATE(A1,MONTH(B1),1),1)+ (C1-1)*7, Sorry ,Just small correction, My week starts on Saturday. You get the last day of week with same formula adding 6. (in format 1-52). For example, September 2021 has its first week finishing on 4th of September, however the code you posted goes with week 1 until 7th of September and not by calendar. In Excel 2007 and earlier versions, only options 1 and 2 are available. Thank you! Arin Islam, Convert Date to Day-Number Using WEEKDAY Function 4. Explain - "formula like this" - what formula are you talking about? So if today is the 6th Jan i would want the formula to show the date of the 26th December. The tricky part is, we don't use the ISO week system. 10-11-2022 14-11-2022 The WEEKNUM function starts counting with the week that contains January 1. How to Convert Serial Numbers to Date in Excel, How to Convert Date to Month and Year in Excel, How to Sort by Date in Excel (Single Column & Multiple Columns). Please note that the formula returns the date as a serial number, and to have it displayed as a date, you need to format the cell accordingly. You dont really need to know exactlywhat number a date is (although you can change the cell formatting to Number when a date is displayed and you will see the number). Steps: In the beginning, select cell D5. In A3, you'd type in: =if(B2>(A2+7),A2,(A2+7)). You can find the detailed instructions in Changing date format in Excel. It will be 3. And so on until you get to 13, at which point the next day, if divided by 14, will have a remainder of 0. Now, we will convert these Dates to the week number of their consecutive months to show you how to convert date to week of month in Excel. Next, type in the date for the week on which you want to begin (for instance, if your first day of data is 5/1/13, and you your weeks start on Sunday, then you'd type in 4/28/13). So, to find that date, we have to find the Monday immediately before January 5. Its also easily adjustable to find preceding Sunday. If you'd rather begin with some other day of the week, say Monday, then use 2 in the second argument: Instead of referring to a cell, you can specify the date directly in the formula by using the DATE(year, month, day) function, for example: The above formula returns 16, which is the number of the week containing April 15, 2015, with a week beginning on Monday. Slightly shorter: = YEAR (A1)+IF (MONTH (A1)=12;ISOWEEKNUM (A1)=1;- (ISOWEEKNUM (A1)>=52)). To get the number after the decimal point, use the WEEKDAY function. Lets say the remainder is 2. So, what will the remainder be if you divide thenext day by 14? Start date: 25-02-2023 27-02-2023 : How to Convert Date to Week Number of Month in Excel (5 Ways), 5 Ways to Convert Date to Week Number of Month in Excel, 1. So no matter what day the sheet is on this week it will always show that Sunday until the date changes to the first date of the next week.