Skip to main content

Kutools for Office ā€” One Suite. Five Tools. Get More Done.

How to set a date to the first day of the month in Excel?

Author Xiaoyang Last modified
A screenshot showing a list of random dates to be converted to the first day of their respective months

If you have a list of random dates, you may want to convert them to the first day of their respective months, as shown in the example. This article demonstrates two simple formulas to accomplish this task in Excel efficiently.

Set or convert date to first day of given month with formulas

arrow blue right bubble Set or convert date to first day of given month with formulas

Here are some handy formulas can help you to convert a random date to the first day of the month, please do as follows:

Enter this formula: =EOMONTH(A2,-1)+1 into a blank cell where you want the result, then drag the fill handle down to apply the formula to the other cells. All dates will be converted to the first day of their respective months. See screenshot:

A screenshot showing the results of converting random dates to the first day of the month in Excel using a formula

Notes:

1. Here is another formula also can help you: =DATE(YEAR(A2),MONTH(A2),1).

2. In above formulas, A2 is the date cell that you want to convert.

Best Office Productivity Tools

šŸ¤– Kutools AI Aide: Revolutionize data analysis based on: Intelligent Execution   |  Generate Code  |  Create Custom Formulas  |  Analyze Data and Generate Charts  |  Invoke Kutools Functionsā€¦
Popular Features: Find, Highlight or Identify Duplicates   |  Delete Blank Rows   |  Combine Columns or Cells without Losing Data   |   Round without Formula ...
Super Lookup: Multiple Criteria VLookup  |   Multiple Value VLookup  |   VLookup Across Multiple Sheets   |   Fuzzy Lookup ....
Advanced Drop-down List: Quickly Create Drop Down List   |  Dependent Drop Down List   |  Multi-select Drop Down List ....
Column Manager: Add a Specific Number of Columns  |  Move Columns  |  Toggle Visibility Status of Hidden Columns  |  Compare Ranges & Columns ...
Featured Features: Grid Focus   |  Design View   |   Big Formula Bar   |  Workbook & Sheet Manager   |  Resource Library (Auto Text)   |  Date Picker   |  Combine Worksheets   |  Encrypt/Decrypt Cells   |  Send Emails by List   |  Super Filter   |   Special Filter (filter bold/italic/strikethrough...) ...
Top 15 Toolsets:  12 Text Tools (Add Text, Remove Characters, ...)   |   50+ Chart Types (Gantt Chart, ...)   |   40+ Practical Formulas (Calculate age based on birthday, ...)   |   19 Insertion Tools (Insert QR Code, Insert Picture from Path, ...)   |   12 Conversion Tools (Numbers to Words, Currency Conversion, ...)   |   7 Merge & Split Tools (Advanced Combine Rows, Split Cells, ...)   |   ... and more
Use Kutools in your preferred language ā€“ supports English, Spanish, German, French, Chinese, and 40+ others!

Supercharge Your Excel Skills with Kutools for Excel, and Experience Efficiency Like Never Before. Kutools for Excel Offers Over 300 Advanced Features to Boost Productivity and Save Time.  Click Here to Get The Feature You Need The Most...

Office Tab Brings Tabbed interface to Office, and Make Your Work Much Easier

  • Enable tabbed editing and reading in Word, Excel, PowerPoint, Publisher, Access, Visio and Project.
  • Open and create multiple documents in new tabs of the same window, rather than in new windows.
  • Increases your productivity by 50%, and reduces hundreds of mouse clicks for you every day!

All Kutools add-ins. One installer

Kutools for Office suite bundles add-ins for Excel, Word, Outlook & PowerPoint plus Office Tab Pro, which is ideal for teams working across Office apps.

Excel Word Outlook Tabs PowerPoint
  • All-in-one suite ā€” Excel, Word, Outlook & PowerPoint add-ins + Office Tab Pro
  • One installer, one license ā€” set up in minutes (MSI-ready)
  • Works better together ā€” streamlined productivity across Office apps
  • 30-day full-featured trial ā€” no registration, no credit card
  • Best value ā€” save vs buying individual add-in