If the format is *m/dd/yyyy but the cells look the way you show, they are text values, not dates.

To convert them:

  • Select the dates (or the entire column).
  • On the Data tab of the ribbon, click Text to Columns.
  • Select Delimited, then click Next > twice.
  • In step 3, select Date, then select DMY from the drop down list next to Date.
  • Click Finish.
  • Apply date format dd/mm/yyyy to the column.
Answer from HansV on learn.microsoft.com
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Excel Forum
excelforum.com › excel-formulas-and-functions › 990750-change-mm-dd-yyyy-to-dd-mm-yyyy.html
Change mm/dd/yyyy to dd/mm/yyyy [SOLVED]
March 8, 2017 - If value needed: =--TEXT(DATEVALUE(C16),"mm/dd/yy") or =DATEVALUE(TEXT(DATEVALUE(C16),"mm/dd/yy")) ... Or use Text To Columns Option. Select the Data Column>>Press Alt+D+E>>Delimited>>Next>>Next>>Column Data Format>>Date>>Select your desired date format in the drop down>>Click Finish
Discussions

excel - change date format m/d/yyyy to dd/mm/yyyy using formula - Stack Overflow
sr date date-text mm dd yyyy concat(dd,mm,yyyy) 1 12/31/2018 12/31/2018 12 31 2018 31/12/2018 2 3/31/2019 3/31/2019 3/ 1/ 2019 1//3//2019 as shown above i have some... More on stackoverflow.com
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Excel Date Conversion from yyyymmdd to mm/dd/yyyy - Stack Overflow
I have been searching for about an hour on how to do this in Excel. I have an Excel file that was created from an old system and I am pulling information from a SQL Server Database, I will be inpu... More on stackoverflow.com
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How do I convert to a date "MM/DD/YYYY"
Assuming your date is in A1 you can use this formula to get an actual date: =DATE(LEFT(A1,4),MID(A1,5,2),RIGHT(A1,2)) Then you can use excel's formatting tools to display that date any way you like. More on reddit.com
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19
October 4, 2023
How to change date format in excel from DD/MM/YYYY to YYYY-MM-DD?
I am trying to change date format from DD/MM/YYYY to YYYY-MM-DD. I tried =text formula, which did not worked, I tried changing the format of the cell by going to Custom and manualy typing the format, it didn't worked either and I also tried =right… More on learn.microsoft.com
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February 14, 2022
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ExtendOffice
extendoffice.com › documents › excel › convert excel date format from dd/mm/yyyy to mm/dd/yyyy
Convert Excel date format from dd/mm/yyyy to mm/dd/yyyy
November 22, 2024 - After downloading and installing Kutools for Excel, you need to do as follows. Select the range of cells containing the dd/mm/yyyy formatted dates you wish to convert. Then, navigate to Kutools > Content > Convert to Date. All selected dates will be immediately converted to the mm/dd/yyyy format.
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Microsoft Support
support.microsoft.com › en-us › office › format-a-date-the-way-you-want-in-excel-8e10019e-d5d8-47a1-ba95-db95123d273e
Format a date the way you want in Excel - Microsoft Support
When you enter some text into a cell such as "2/2", Excel assumes that this is a date and formats it according to the default date setting in Control Panel. Excel might format it as "2-Feb". If you change your date setting in Control Panel, the default date format in Excel will change accordingly.
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Ablebits
ablebits.com › ablebits blog › excel › date › how to change excel date format and create custom formatting
How to change date format in Excel and create custom ...
October 10, 2023 - For example, if you use the date format dd-mm-yyyyy, this value will be written as text. Therefore, you cannot change its format. The following tutorial should help: How to convert text to date in Excel.
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Microsoft Learn
learn.microsoft.com › en-us › answers › questions › 734484 › how-to-change-date-format-in-excel-from-dd-mm-yyyy
How to change date format in excel from DD/MM/YYYY to YYYY-MM-DD? - Microsoft Q&A
February 14, 2022 - It is recommended to use the DATEVALUE function to convert the date to an Excel serial number first, and then customize the cell format to YYYY-MM-DD Here is an example screenshot:
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UiPath Community
forum.uipath.com › help › studio
How to change the excel date format from DD/MM/YYYY to YYYY-MM-DD - Studio - UiPath Community Forum
April 3, 2023 - Hi I want to change the date format from a column, I tried format cells from excel activities, but it doesn’t have the format I want. How can I do this?
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MyExcelOnline
myexcelonline.com › home › convert dates to mm yy format in excel: quick formatting tips
Convert Dates to MM YY Format in Excel: Quick Formatting Tips | MyExcelOnline
January 10, 2026 - To change the date format to MM ... the new format. To convert the date from MM DD YYYY to DD MM YYYY in Excel, use the Format Cells feature....
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Wall Street Mojo
wallstreetmojo.com › home › all blogs › excel resources › date format in excel
Date Format in Excel - How to Change & Custom Format?
October 23, 2021 - These dates are in the format dd-mm-yyyy. We want to change their format to dd-mmmm-yyyy. For instance, the date in cell A1 should appear as 25-February-2018. We may use the “Custom” option of the “Format Cells” dialog box. The steps to change the date format in Excel are listed as follows:
Top answer
1 of 5
3

Formula in B2 is

=DATEVALUE(TEXTJOIN("-",TRUE,CHOOSECOLS(TEXTSPLIT(A1,"/"),3,1,2)))

Working from the inside out:

TEXTSPLIT to split the string into month, day, year

CHOOSECOLS to reorder the strings into year, month, day

TEXTJOIN to join those strings with a - that will be recognized by the DATEVALUE formula

DATEVALUE to turn the strings into a date, and it won't matter whether they are single or double digits for month and date.

2 of 5
2
=DATE(
    INDEX(FILTERXML("<t><s>" & SUBSTITUTE(A1, "/", "</s><s>") & "</s></t>", "//s"), 3),
    INDEX(FILTERXML("<t><s>" & SUBSTITUTE(A1, "/", "</s><s>") & "</s></t>", "//s"), 1),
    INDEX(FILTERXML("<t><s>" & SUBSTITUTE(A1, "/", "</s><s>") & "</s></t>", "//s"), 2)
)

Will convert text strings in an MDY type format with a / separator into a proper date. You can then format it as you wish.

If you might have other delimiters, nest SUBSTITUTE functions to take cared of that.

For example, if you might have either a / or a ., you would modify the formula to:

=DATE(
    INDEX(
        FILTERXML(
            "<t><s>" & SUBSTITUTE(SUBSTITUTE(A1, ".", "/"), "/", "</s><s>") & "</s></t>",
            "//s"
        ),
        3
    ),
    INDEX(
        FILTERXML(
            "<t><s>" & SUBSTITUTE(SUBSTITUTE(A1, ".", "/"), "/", "</s><s>") & "</s></t>",
            "//s"
        ),
        1
    ),
    INDEX(
        FILTERXML(
            "<t><s>" & SUBSTITUTE(SUBSTITUTE(A1, ".", "/"), "/", "</s><s>") & "</s></t>",
            "//s"
        ),
        2
    )
)

Algorithm:

  • Create an XML from the date, replacing the delimiter with the node identifier
  • Since we know there will only be three segments, and they are in the order MDY, we can feed those results into the DATE function to create our "real date"
  • You can then format the date however you wish

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Excel Tutorial
excel-tutorial.com › home › function › date › change the default date format in excel
Change the default Date format in Excel
May 12, 2024 - So the answer to "Change the default date format in excel" is not to change your windows settings. Most people already have the correct date format set for their installation of windows based on their region. After all, the date and time in my task bar always shows a complete date mm/dd/yyyy.