by The first part of our tutorial focuses of formatting dates in Excel and explains how to set the default date and time formats, how to change date format in Excel, how to create custom date formatting, and convert your dates to another locale.
Along with numbers, dates and times are the most common data types people use in Excel. However, they may be quite confusing to work with, firstly, because the same date can be displayed in Excel in a variety of ways, and secondly, because Excel always internally stores dates in the same format regardless of how you have formatted a date in a given cell.
Knowing the Excel date formats a little in depth can help you save a ton of your time. And this is exactly the aim of our comprehensive tutorial to working with dates in Excel. In the first part, we will be focusing on the following features:
Excel date format
Before you can take advantage of powerful Excel date features, you have to understand how Microsoft Excel stores dates and times, because this is the main source of confusion. While you would expect Excel to remember the day, month and the year for a date, that's not how it works...
Excel stores dates as sequential numbers and it is only a cell's formatting that causes a number to be displayed as a date, time, or date and time.
Dates in Excel
All dates are stored as integers representing the number of days since January 1, 1900, which is stored as number 1, to December 31, 9999 stored as 2958465.
In this system:
- 2 is 2-Jan-1900
- 3 is 3-Jan-1900
- 42005 is 1-Jan-2015 (because it is 42,005 days after January 1, 1900)
Time in Excel
Times are stored in Excel as decimals, between .0 and .99999, that represent a proportion of the day where .0 is 00:00:00 and .99999 is 23:59:59.
For example:
- 0.25 is 06:00 AM
- 0.5 is 12:00 PM
- 0.541655093 is 12:59:59 PM
Dates & Times in Excel
Excel stores dates and times as decimal numbers comprised of an integer representing the date and a decimal portion representing the time.
For example:
- 1.25 is January 1, 1900 6:00 AM
- 42005.5 is January 1, 2015 12:00 PM
How to convert date to number in Excel
If you want to know what serial number represents a certain date or time displayed in a cell, you can do this in two ways.
1. Format Cells dialog
Select the cell with a date in Excel, press Ctrl+1 to open the Format Cells window and switch to the General tab.
If you just want to know the serial number behind the date, without actually converting date to number, write down the number you see under Sample and click Cancel to close the window. If you want to replace the date with the number in a cell, click OK.
2. Excel DATEVALUE and TIMEVALUE functions
Use the DATEVALUE() function to convert an Excel date to a serial number, for example =DATEVALUE("1/1/2015").
Use the TIMEVALUE() function to get the decimal number representing the time, for example =TIMEVALUE("6:30 AM").
To know both, date and time, concatenate these two functions in the following way:
=DATEVALUE("1/1/2015") & TIMEVALUE("6:00 AM")
Note. Since Excel's serial numbers begins on January 1, 1900 and negative numbers aren't recognized, dates prior to the year 1900 are not supported in Excel.
If you enter such a date in a sheet, say 12/31/1899, it will be a text value rather than a date, meaning that you cannot perform usual date arithmetic on early dates. To make sure, you can type the formula =DATEVALUE("12/31/1899") in some cell, and you will get an anticipated result - the #VALUE! error.
If you are dealing with date and time values and you'd like to convert time to decimal number, please check out the formulas described in this tutorial: How to convert time to decimal number in Excel.
Default date format in Excel
When you work with dates in Excel, the short and long date formats are retrieved from your Windows Regional settings. These default formats are marked with an asterisk (*) in the Format Cell dialog window:
The default date and time formats in the Format Cell box change as soon as you change the date and time settings in Control Panel, which leads us right to the next section.
How to change the default date and time formats in Excel
If you want to set a different default date and/or time formats on your computer, for example change the USA date format to the UK style, go to Control panel and click Region and Language. If in your Control panel opens in Category view, then click Clock, Language, and Region > Region and Language > Change the date, time, or number format.
On the Formats tab, choose the region under Format, and then set the date and time formatting by clicking on an arrow next to the format you want to change and selecting the desired one from the drop-down list:
Tip. If you are not sure what different codes (such as mmm, ddd, yyy) mean, click the "What does the notation mean" link under the Date and time formats section, or check the Custom Excel date formats in this tutorial.
If you are not happy with any time and date format available on the Formats tab, click the Additional settings button in the lower right-hand side of the Region and Language dialog window. This will open the Customize dialog, where you switch to the Date tab and enter a custom short or/and long date format in the corresponding box.
How to quickly apply default date and time formatting in Excel
Microsoft Excel has two default formats for dates and time - short and long, as explained in default Excel date format.
To quickly change date format in Excel to the default formatting, do the following:
- Select the dates you want to format.
- On the Home tab, in the Number group, click the little arrow next to the Number Format box, and select the desired format - short date, long date or time.
If you want more date formatting options, either select More Number Formats from the drop-down list or click the Dialog Box Launcher next to Number. This will open a familiar Format Cells dialog and you can change date format there.
Tip. If you want to quickly set date format in Excel to dd-mmm-yy, press Ctrl+Shift+#. Just keep in mind that this shortcut always applies the dd-mmm-yy format, like 01-Jan-15, regardless of your Windows Region settings.
How to change date format in Excel
In Microsoft Excel, dates can be displayed in a variety of ways. When it comes to changing date format of a given cell or range of cells, the easiest way is to open the Format Cells dialog and choose one of the predefined formats.
- Select the dates whose format your want to change, or empty cells where you want to insert dates.
- Press Ctrl+1 to open the Format Cells dialog. Alternatively, you can right click the selected cells and choose Format Cells… from the context menu.
- In the Format Cells window, switch to the Number tab, and select Date in the Category list.
- Under Type, pick a desired date format. Once you do this, the Sample box will display the format preview with the first date in your selected data.
- If you are happy for the preview, click the OK button to save the format change and close the window.
If the date format is not changing in your Excel sheet, most likely your dates are formatted as text and you have to convert them to the date format first.
How to convert date format to another locale
Once you've got a file full of foreign dates and you would most likely want to change them to the date format used in your part of the world. Let's say, you want to convert an American date format (month/day/year) to a European style format (day/month/year).
The easiest way to change date format in Excel based on how another language displays dates is as follows:
- Select the column of dates you want to convert to another locale.
- Press Ctrl+1 to open the Format Cells
- Select the language you want under Locale (location) and click OK to save the change.
If you want the dates to be displayed in another language, then you will have to create a custom date format with a locale code.
Creating a custom date format in Excel
If none of the predefined Excel date formats is suitable for you, you are free to create your own.
- In an Excel sheet, select the cells you want to format.
- Press Ctrl+1 to open the Format Cells dialog.
- On the Number tab, select Custom from the Category list and type the date format you want in the Type box.
- Click OK to save the changes.
Tip. The easiest way to set a custom date format in Excel is to start from an existing format close to what you want. To do this, click Date in the Category list first, and select one of existing formats under Type. After that click Custom and make changes to the format displayed in the Type box.
When setting up a custom date format in Excel, you can use the following codes.
| Code | Description | Example (January 1, 2005) |
| m | Month number without a leading zero | 1 |
| mm | Month number with a leading zero | 01 |
| mmm | Month name, short form | Jan |
| mmmm | Month name, full form | January |
| mmmmm | Month as the first letter | J (stands for January, June and July) |
| d | Day number without a leading zero | 1 |
| dd | Day number with a leading zero | 01 |
| ddd | Day of the week, short form | Mon |
| dddd | Day of the week, full form | Monday |
| yy | Year (last 2 digits) | 05 |
| yyyy | Year (4 digits) | 2005 |
When setting up a custom time format in Excel, you can use the following codes.
| Code | Description | Displays as |
| h | Hours without a leading zero | 0-23 |
| hh | Hours with a leading zero | 00-23 |
| m | Minutes without a leading zero | 0-59 |
| mm | Minutes with a leading zero | 00-59 |
| s | Seconds without a leading zero | 0-59 |
| ss | Seconds with a leading zero | 00-59 |
| AM/PM | Periods of the day (if omitted, 24-hour time format is used) |
AM or PM |
To set up date and time format, include both date and time units in your format code, e.g. m/d/yyyy h:mm AM/PM. When you use "m" immediately after "hh" or "h" or immediately before "ss" or "s", Excel will display minutes, not a month.
When creating a custom date format in Excel, you can use a comma (,) dash (-), slash (/), colon (:) and other characters.
For example, the same date and time, say January 13, 2015 13:03, can be displayed in a various ways:
| Format | Displays as |
| dd-mmm-yy | 13-Jan-15 |
| mm/dd/yyyy | 01/13/2015 |
| m/dd/yy | 1/13/15 |
| dddd, m/d/yy h:mm AM/PM | Tuesday, 1/13/15 1:03 PM |
| ddd, mmmm dd, yyyy hh:mm:ss | Tue, January 13, 2015 13:03:00 |
Tip. Using a custom date format, you can easily display the day of the week from date.
How to create a custom Excel date format for another locale
If you want to display dates in another language, you have to create a custom format and prefix a date with a corresponding locale code. The locale code should be enclosed in [square brackets] and preceded with the dollar sign ($) and a dash (-). Here are a few examples:
- [$-409] - English, Untitled States
- [$-1009] - English, Canada
- [$-407] - German, Germany
- [$-807] - German, Switzerland
- [$-804] - Bengali, India
- [$-804] - Chinese, China
- [$-404] - Chinese, Taiwan
You can find the full list of locale codes on this blog.
For example, this is how you set up a custom Excel date format for the Chinese locale in the year-month-day (day of the week) time format:
The following image shows a few examples of the same date formatted with different locale codes in the way traditional for the corresponding languages:
Excel date format not working - fixes and solutions
Usually, Microsoft Excel understands dates very well and you are unlikely to hit any roadblock when working with them. If you happen to have an Excel date format problem, please check out the following troubleshooting tips.
A cell is not wide enough to fit an entire date
If you see a number of pound signs (#####) instead of dates in your Excel worksheet, most likely your cells are not wide enough to fit the whole dates.
Solution. Double-click the right border of the column to resize it to auto fit the dates. Alternatively, you can drag the right border to set the column width you want. For more details, see How to fix #### error in Excel.
Negative numbers are formatted as dates
Hash marks (#####) are also displayed when a cell formatted as a date or time contains a negative value. Usually it's a result returned by some formula, but it may also happen when you type a negative value into a cell and then format that cell as a date.
If you want to display negative numbers as negative dates, two options are available to you:
Solution 1. Switch to the 1904 date system.
Go to File > Options > Advanced, scroll down to the When calculating this workbook section, select the Use 1904 date system check box, and click OK.
In this system, 0 is 1-Jan-1904; 1 is 2-Jan-1904; and -1 is displayed as a negative date -2-Jan-1904.
Of course, such representation is very unusual and takes time to get used to, but this is the right way to go if you want to perform calculations with early dates.
Solution 2. Use the Excel TEXT function.
Another possible way to display negative numbers as negative dates in Excel is using the TEXT function. For example, if you are subtracting C1 from B1 and a value in C1 is greater than in B1, you can use the following formula to output the result in the date format:
=TEXT(ABS(B1-C1),"-d-mmm-yyyy")
You may want to change the cell alignment to right justified, and naturally, you can use any other custom date formats in the TEXT formula.
Note. Unlike the previous solution, the TEXT function returns a text value, that is why you won't be able to use the result in other calculations.
Dates are imported to Excel as text values
When you are importing data to Excel from a .csv file or some other external database, dates are often imported as text values. They may look like normal dates to you, but Excel perceives them as text and treats accordingly.
Solution. You can convert "text dates" to the date format using Excel's DATEVALUE function or Text to Columns feature. Please see the following article for full details: How to convert text to date in Excel.
Tip. If none of the above tips worked for you, then try to remove all formatting and then set the desired date format.
This is how you format dates in Excel. In the next part of our guide, we will discuss various ways of how you can insert dates and times in your Excel worksheets. Thank you for reading and see you next week!
932 comments
I have been able to pull the day (as text) from a date in another field (ex: 27 from 27 Sep 21) using TEXT(DAY(cell),"00").
However, for my application, I would also like to be able to add another number to the day portion for scheduling purposes. For example, a single schedule for 27 Sep 21 would show as "727", but I would like to add 30 or 60 to show other scheduled activity for that day (to be shown as "757" and "787" respectively).
What is the best way to accomplish this?
The original formula is: If(MONTH(A36)=9,"7"&TEXT(DAY(A36),"00"),"")
Hello!
You can simply add 30 to your formula.
=IF(MONTH(A36)=9,"7"&TEXT(DAY(A36),"00"),"")+30
If the result is as text -
=(IF(MONTH(A36)=9,"7"&TEXT(DAY(A36),"00"),"")+30)&""
Hope this is what you need.
one cell Take 7 Numeric Value For example (1112021). How to change Date formate.
but which date is correct its (01-11-2021) or (11-01-2021) ?
Pls Kindly send formula.....
Hi!
You can see the correct date format in the regional settings of your Windows.
Hi sir,
need your support to change the date format as below pasted date format not correct and not complete.
09/17/21 15:53:42
i want like 17/09-2021 15:53:42
Hi!
I hope you have studied the recommendations in the tutorial above. Replace in date format symbol / on -.
Hi, How to convert 01-JUN-18 12.25.13.031000000 AM into 00:25:13 as the string is in AM. Also, how I convert the same string to time format in PM i.e. 12:25:13. Can someone help me with a formula with AM and PM?
Hi!
If I understand your task correctly, the following formula should work for you:
=LEFT(A2,SEARCH(" ",A2,1)) + SUBSTITUTE(LEFT(SUBSTITUTE(MID(A2,SEARCH(" ",A2,1)+1,100),".","#",3), SEARCH("#",SUBSTITUTE(MID(A2,SEARCH(" ",A2,1)+1,100),".","#",3),1)-1) & RIGHT(A2,3),".",":")
I will try the formula and update. Thanks Already.
Hi Alex,
I applied the formula. It gives correct time. But when I compare to 12:25:10 AM i.e. 01-JUN-18 12.25.10.031000000 AM it gives a difference of 23:59:57 which is too huge difference to consider.
I tried with another formula before:
=(SUBSTITUTE(MID(A2,11,8),”.”,”:”)+IF(AND(MID(A2,11,2)”12”,RIGHT (A2,2)=“PM”),0.5,0))+TIME (4,0,0)
The difference from other timestamps are good. Like for above example, I get 00:00:03.
Only, issue is with the formula is, it doesn’t identify 12:00:00 AM as 00:00:00 but identifies 12:00:00 PM as 12:00:00.so, I requested for a suggestion. Any update on the details would be helpful. Thanks already.
Hello!
12:00 am and 12:00 pm are shown differently in different countries. Excel defines 12:00:00 PM as 12:00:00 according to the international standard ISO 8601.
I am trying to find difference between
21-08-24 03:02:54 and 24-AUG-21 03.00.47.059641000AM. I have added time(4,0,0).
I converted as 7:02:54 AM and 7:00:47 AM. When I subtract as per the above formula, it gives a difference of 23:57:53.
When I convert the timestamps to number, it is 0.29 and 44432.29. I believe, the second number is counting the date also, that’s why making difference too huge. How can I resolve this? As difference should show as 0:02:07. Please suggest.
Hi!
Explain what you are subtracting and what formula you are using. You cannot subtract 7:02:54 AM from 7:00:47 AM. Negative times are not possible. If from date 8/24/2021 3:00:47 subtract 8/21/2024 3:02:54 we get 2 days 23:57:53
No, both are 24 aug 2021. It’s just formats are different. I am subtracting 07:02:54 - 07:00:47.
Hi!
The time difference 07:02:54 - 07:00:47 is equal to 0:02:07. How did you get the time 23:57:53?
To convert the 24-AUG-21 03.00.47.059641000AM, I have applied
=LEFT(A2,SEARCH(" ",A2,1)) + SUBSTITUTE(LEFT(SUBSTITUTE(MID(A2,SEARCH(" ",A2,1)+1,100),".","#",3), SEARCH("#",SUBSTITUTE(MID(A2,SEARCH(" ",A2,1)+1,100),".","#",3),1)-1) & RIGHT(A2,3),".",":")
Then for difference, I have applied =MAX(A2::B2)-MIN(A2:B2)
Some, results for other timestamps are correct but some shows huge difference like above. How I can rectify this issue?
Hi!
If the formula shows the correct result for some data, then the formula is correct. I think that in some cells the data is written differently. Therefore, the result is wrong. Check the data. I can't help you anymore.
Thank you for the time and effort Alex.
I am working with three timestamps:
021928.000000, 21-09-02 02:39:51, 21-08-31 22:40:00. Converted to
2:19:28 AM, 2:39:51 AM & 22:40:00 AM. Last timestamp is added 4 hours.
Consecutive timestamp difference from the array is.
0:20:23, 0:00:09.
To find the max time difference , I have applied the formula in conditional formatting rule:
=Q2=MAX($Q2:$S2).
It doesn’t give 0:20:23 as max value but the value returns is 0:00:09.
Please advise, if anything needs to be understood to improve the formula.
Hello!
You don't need to use a formula to highlight the maximum value. Use Conditional Formatting - Top/Bottom Rules - Top 10 Items - Format cells rank in the top set to 1.
I hope this will help.
Thanks a lot. I tried the same.
Hello,
I wanted to learn, how to convert "3 year(s), 10 month(s), 29 day(s)" into numbers like "3.8" or "4.1". Thank you!!
Hi there,
What is the excel formula for "07/2021 to 06/2022" in excel?
Hi!
Your question is not entirely clear, please specify.
There is a long list of date in this format 26-07-2021 11:39:00 AM, but when i convert them to date 26-07-202, few get converted but few are still in the same format
Want to convert 26-07-2021 11:39:00 AM to 26-07-2021
Can you share, how can that be done
Hi!
What formula are you using? What date and time format does your Excel use?
Pay attention to this comment. It might be helpful.
Can someone help me to extract time from
30-jun-21 01.45.18.488173000 pm. to 01:45:18pm?
Hi,
I combined 2 excel files with dates in the formats "2021-07-28 13:00:00" and "8/18/21 10:00 AM".
Using custom formatting, I changed all the dates to "2021-07-28 13:00:00" format. However, when I did a pivot chart on the table, I realized that the dates appeared in both formats.
How do correct this so that all the dates appear in the format "2021-07-28 13:00:00".
Thanks
How convert this type value 20191115 to 15/11/2019
Hello!
I recommend reading this guide: How to convert 8-digit number to date in Excel
The dates in my Google drive Excel file are confusing dates for months. Instead of 03 / 08 / 2021 reading as 3rd August, it's reading as 8th March. There are so many entries having similar issues, how do I correct this error without having to do the one after the other. So that it recognizes the month as day instead.
Thank you.
Hello!
Change the regional settings of your Google drive.
Which ever date i enter, it should appear as the 1st date of that month
Hi!
Use the custom date format
"1/"mm/yyyy
Hello all,
May I ask how can I show my date like: 9-Aug-2021, with the input message by me be: 8/9/2021 please? Because if I input it that way (with month first, then date), it turns out like: 8-Sept-2021
Thank you so much in advance!
Hello!
Here is the article that may be helpful to you: Default date format in Excel. Change the date format.
How can I convert from 7/14/2021 to 7/14 ?
Define the column as DAte data type
Apply custom format: M/d
The underlying date will contain the year but it will not be displayed.
Hi!
You can use custom date format "mm/dd".
Or you can use the formula
=TEXT(A1,"mm/dd")
That should have read day, date, month and year!
Thanks
Louise
Louise says:
August 5, 2021 at 4:11 am
I would like all the day , date and year in the following format
Mon, 23 Jan, 2021
Is there anyway to do this in excel?
Thanks
Louise
I would like all the day , date and year in the following format
Mon, 23 Jan, 2021
Is there anyway to do this in excel?
Thanks
Louise
Hi!
I hope you have studied the recommendations in the tutorial above. It contains answers to your question — ddd, dd mmm, yyyy
Define the column as a Date data type in Home tab > Number group
alternately
ddd, d mmm, yyyy
Single D does not display leading zero
Alexander's format would display date
Mon, 03 Jan, 2021
Within a cell, I've been trying to suss out how to colour the day name differently from the date (in a lighter grey shade) to help the date stand out but keeping the day visible as it will jog the user's memory for the delivery they're checking.
I know it's possible to change font colour between positive and negative numeric values and conditional formatting can be used to pick out different cell values in different colours but I can't find a format syntax to colour part cells.
If you know of a way to use custom formats to colour different parts of a font string I'd be interested to hear. Just curious, don't expect there's many people want to do that!
Until I find a better way I have duplicated the date column - one has the ddd format with grey font and the other column has the dd/mmm/yy format with black font.
thanks
Hi!
With conditional formatting, you can only change the format of an entire cell.
Hello,
How can i convert from July 24th 2021 to 24-07-2021
Thanks
Hi!
Read the answer to your question in this comment.
How would I go about doing the opposite?
e.g.
from:
25/09/2019 14:00:03.000
to:
2019-09-25T14:00:03.000Z
Thanks again
Hi!
Correct the formula I gave you. Read Using Excel REPLACE and SUBSTITUTE functions
Yeah, I realized just after posting that, for doing it the other way around, it was easier to simply create a custom format that includes the T and Z in the required places.
Thanks again