Excel Iso Date Format
VBA stands for Visual Basic for Applications. It is different from Visual Basic. Microsoft came up with this programming feature to use with the Microsoft Office software suite. It can be used to create programs to be run on Microsoft Excel, Outlook or other components of the MS Office suite. In this intermediate level tutorial, we walk you through VBA Format function for date and time. VBA Format function takes an expression, a date or number value and converts the same into a string. We assume that you know the basic concepts of MS Excel and Visual Basic for Applications. You can learn more about VBA in this excellent course, or of you’re in a hurry, you can take this 24hr VBA trainer course.
How to Assign VBA Date Value to a Variable
You can set the format in any version of Microsoft Excel starting from Excel 2000 to Excel version 2013. You can assign any date format as a value to a variable with the date data type in Excel VBA. However, ensure that values are put between simple hash (#) tags. Here VBA converts the value to a “Date” that can be used in comparisons and other types of statements. The following examples show this:
- Use international date format (ISO) How does one write a date on the Web? There are so many formats available, most of them incompatible with others, that it can be a usability nightmare to choose a date representation when writing for an international, cross-cultural audience, as is the case on the web.
- Oct 20, 2017 Excel Date and Time Formatting October 20, 2017 by Mynda Treacy 6 Comments Even though dates and time are actually stored as a regular number known as the date serial number, we can make use of extensive Excel date and time formatting options to display them just the way we want.
- In Excel, if you want to convert date to text with yyyy-mm-dd format, you can use formula. Select a blank cell next to your date, for instance. I1, and type this formula =TEXT(G1, 'yyyy-mm-dd'), and press Enter key, then drag AutoFill handle over the cells needed this formula.
- Re: Convert the date in ISO format Hey Shg, I'm new on this Vba programming. Can you please tell me how to integrate the same in my existing program. I don't want the changed format date in excel sheet to be displayed, I want the it to get converted in that form before the api call.
ISO 8601 Data elements and interchange formats – Information interchange – Representation of dates and times is an international standard covering the exchange of date - and time -related data. It was issued by the International Organization for Standardization (ISO) and was first published in 1988. How to convert various non-standard date formats to standard date in Excel? Maybe you have encountered with various non-standard date formats when you use the Excel workbook. Excel doesn’t recognize them and you can’t use them for any calculation purpose or change their format as you need.
VBA will interpret the above statements to the date “March 24, 2014.” Before we move on, to learn more about how you can use VBA with MS Excel, you may want to try out this primer course; or just crash through our VBA tutorial to brush up your understanding.
VBA Format Function
Microsoft Excel Format function accepts the date expression and returns it as a formatted string. The syntax of Format date function looks like this
Let’s take a closer look at the parameters.
- Expression stands for the value to be formatted.
- Format stands for the format to be applied to the expression. It is optional. In VBA Format Date function you have the option to either define your own format or use some of the MS Excel predefined format.
- Firstdayofweek specifies the first day of the week. If it is not declared, the Format function assumes that Sunday is the first day of the week. This parameter is optional.
- Firstweekofyear is the value that specifies the first week of the year. However, if this parameter is not declared, then the Format function assumes that the first week begins from January 1.
The table given below displays some of the Excel predefined date format.
Format | Explanation |
| General Date | Displays date depending upon the system settings |
| Long Date | Displays date depending upon the system’s long date setting |
| Medium Date | Displays date depending upon the system’s medium date setting |
| Short Date | Displays date depending upon the system’s short date setting |
| Long Time | Displays time depending upon the system’s long time setting |
| Medium Time | Displays time depending upon the system’s medium time setting |
| Short Time | Displays time depending upon the system’s short time setting |
The table given below contains the values the parameter “firstdayoftheweek” can take up in your VBA programs.
Constant | Value | Explanation |
| vbUseSystem | 0 | Uses the NLS API (National Language Support Application Program Interface) setting |
| VbSunday | 1 | Sunday (default, if parameter is not declared) |
| vbMonday | 2 | Monday |
| vbTuesday | 3 | Tuesday |
| vbWednesday | 4 | Wednesday |
| vbThursday | 5 | Thursday |
| vbFriday | 6 | Friday |
| vbSaturday | 7 | Saturday |
The table below lists the possible values of the optional parameter “Firstweekofyear that you can use in your VBA programs. Take a look
| Constant | Value | Explanation |
| vbUseSystem | 0 | Uses the NLS API setting |
| vbFirstJan1 | 1 | The week that contains January 1 |
| vbFirstFourDays | 2 | The first week that has at least 4 days in the year |
| vbFirstFullWeek | 3 | The first full week of the year |
Here are a few examples of Format function for Date in Excel VBA to make this function more clear.
1. Format(#24/03/2014#, “Short Date”) would return ’24/03/2014′
2. Format(#24/03/2014#, “Long Date”) would return ‘March 24, 2014’
3. Format(#24/03/2014#, “yyyy/mm/dd”) would return ‘2014/03/24’
We suggest that you work out more examples of your own on date function format. That’ll help you get more comfortable with the various options. This course with Mr Excel can help you get a good workout with Excel VBA examples.
User Defined Format Function for date and time
Note that you can also use some pre-defined variants of the Format function for date and time. The syntax of that looks like this
The table below shows the user-defined Format function for date and time. Read through carefully
| Format | Explanation |
| Format (Now, “M”) | Displays the current month and date |
| Format (Now, “MM”) | Displays the current month in double digits. |
| Format (Now, “MMM”) | Displays the abbreviated name of the current month |
| Format (Now, “MMMM”) | Displays the full name of the current month. |
| Format (Now, “dd/MM/yyyy”) | Displays the current date in the day/month/year format. |
| Format (Now, “MMM,d,yyyy”) | Displays the current date in the Month, Day, Year Format |
| Format (Now, “h:mm:ss tt”) | Displays the current time in the format hour:minute:second and show am/pm |
| Format (Now, “MM/dd/yyyy h:mm:ss) | Displays current date and time in the format hour:minute:second |
How To Format Date In Excel
Let’s take a closer look at the user-defined format function for date and time using a simple VBA program.
When you run this program, it will display the current system date in different formats.
Characters supported by VBA Date Function
VBA Date functions supports these characters to display date and time. It’s quite a long list, so check out the table below!
| Characters | Example | Description |
| m | 8 | Month (numerical without zeros) |
| mm | 08 | Month (numerical with zeros) |
| mmm | Sep | Month (abbreviated text) |
| mmmm | September | Month (full-length text) |
| d | 6 | Day (numerical without zeros) |
| dd | 06 | Day (numerical with zeros) |
| ddd | Wed | Day (abbreviated text) |
| dddd | Wednesday | Days (full-length text) |
| yy | 14 | Year (last 2 digits) |
| yyyy | 2014 | Year (4 digits) |
| h | 9 | Hours without zeros (0-23) |
| hh | 09 | Hours with zeros (00-23) |
| n | 7 | Minutes without zeros (0-59) |
| nn | 07 | Minutes with zeros (00-59) |
| s | 5 | Seconds without zeros (0-59) |
| ss | 05 | Seconds with zeros (00-59) |
| AM/PM | AM | Display AM/PM |
Let’s use an example to help you to understand the above table better.
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In this program we assign the system date and time through the now() to the variable date_example. After the execution of the program, the cells will contain the following values
Given below is an example of using date function to calculate your age. We assume that you have basic programming knowledge. If not please refer our basic tutorial on VBA programming.
Calculating Age In VBA
This program accepts two parameters Date1 and Date2. Date1 is the year of your birth and Date2 is the current date. In the end, you get your age in terms of years, months and days.
Like you’ve just seen, the Format function for date and time comes in variety of options. You can choose the format that you want to display or use in your programs. As always practice makes perfect. Do try these examples for yourself. If you’d like to get more hands on with VBA before you proceed, this course can help you. Once you’re ready to step it up a notch, you can try out this Ultimate VBA course. Let us know how it goes!
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. If you don’t like the default date format, you can choose another date format in Excel, such as 'February 2, 2012' or '2/2/12'. You can also create your own custom format in Excel desktop.
Choose from a list of date formats
Follow these steps:
Select the cells you want to format.
Press CTRL+1.
In the Format Cells box, click the Number tab.
In the Category list, click Date.
Under Type, pick a date format. Your format will preview in the Sample box with the first date in your data.
Note: Date formats that begin with an asterisk (*) will change if you change the regional date and time settings in Control Panel. Formats without an asterisk won’t change.
If you want to use a date format according to how another language displays dates, choose the language in Locale (location).
Tip: Do you have numbers showing up in your cells as #####? It's likely that your cell isn’t wide enough to show the whole number. Try double-clicking the right border of the column that contains the cells with #####. This will resize the column to fit the number. You can also drag the right border of the column to make it any size you want.
Create a custom date format
If you want to use a format that isn’t in the Type box, you can create your own. The easiest way to do this is to start from a format this is close to what you want.
Select the cells you want to format.
Press CTRL+1.
In the Format Cells box, click the Number tab.
In the Category list, click Date, and then choose a date format you want in Type. You can adjust this format in the last step below.
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Go back to the Category list, and choose Custom. Under Type, you’ll see the format code for the date format you chose in the previous step. The built-in date format can’t be changed, so don’t worry about messing it up. The changes you make will only apply to the custom format you’re creating.
In the Type box, make the changes you want using code from the table below.
To display | Use this code |
|---|---|
Months as 1–12 | m |
Months as 01–12 | mm |
Months as Jan–Dec | mmm |
Months as January–December | mmmm |
Months as the first letter of the month | mmmmm |
Days as 1–31 | d |
Days as 01–31 | dd |
Days as Sun–Sat | ddd |
Days as Sunday–Saturday | dddd |
Years as 00–99 | yy |
Years as 1900–9999 | yyyy |
If you’re modifying a format that includes time values, and you use 'm' immediately after the 'h' or 'hh' code or immediately before the 'ss' code, Excel displays minutes instead of the month.
Tips for displaying dates
To quickly use the default date format, click the cell with the date, and then press CTRL+SHIFT+#.
If a cell displays ##### after you apply date formatting to it, the cell probably isn’t wide enough to show the whole number. Try double-clicking the right border of the column that contains the cells with #####. This will resize the column to fit the number. You can also drag the right border of the column to make it any size you want.
To quickly enter the current date in your worksheet, select any empty cell, press CTRL+; (semicolon), and then press ENTER, if necessary.
To enter a date that will update to the current date each time you reopen a worksheet or recalculate a formula, type =TODAY() in an empty cell, and then press ENTER.
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. If you don’t like the default date format, you can choose another date format in Excel, such as 'February 2, 2012' or '2/2/12'. You can also create your own custom format in Excel desktop.
Choose from a list of date formats
Follow these steps:
Select the cells you want to format.
Press Control+1 or Command+1.
In the Format Cells box, click the Number tab.
In the Category list, click Date.
Under Type, pick a date format. Your format will preview in the Sample box with the first date in your data.
Note: Date formats that begin with an asterisk (*) will change if you change the regional date and time settings in Control Panel. Formats without an asterisk won’t change.
If you want to use a date format according to how another language displays dates, choose the language in Locale (location).
Tip: Do you have numbers showing up in your cells as #####? It's likely that your cell isn’t wide enough to show the whole number. Try double-clicking the right border of the column that contains the cells with #####. This will resize the column to fit the number. You can also drag the right border of the column to make it any size you want.
Create a custom date format
If you want to use a format that isn’t in the Type box, you can create your own. The easiest way to do this is to start from a format this is close to what you want.
Select the cells you want to format.
Press Control+1 or Command+1.
In the Format Cells box, click the Number tab.
In the Category list, click Date, and then choose a date format you want in Type. You can adjust this format in the last step below.
Go back to the Category list, and choose Custom. Under Type, you’ll see the format code for the date format you chose in the previous step. The built-in date format can’t be changed, so don’t worry about messing it up. The changes you make will only apply to the custom format you’re creating.
In the Type box, make the changes you want using code from the table below.
To display | Use this code |
|---|---|
Months as 1–12 | m |
Months as 01–12 | mm |
Months as Jan–Dec | mmm |
Months as January–December | mmmm |
Months as the first letter of the month | mmmmm |
Days as 1–31 | d |
Days as 01–31 | dd |
Days as Sun–Sat | ddd |
Days as Sunday–Saturday | dddd |
Years as 00–99 | yy |
Years as 1900–9999 | yyyy |
If you’re modifying a format that includes time values, and you use 'm' immediately after the 'h' or 'hh' code or immediately before the 'ss' code, Excel displays minutes instead of the month.
Tips for displaying dates
Excel Iso Date Format Java
To quickly use the default date format, click the cell with the date, and then press CTRL+SHIFT+#.
If a cell displays ##### after you apply date formatting to it, the cell probably isn’t wide enough to show the whole number. Try double-clicking the right border of the column that contains the cells with #####. This will resize the column to fit the number. You can also drag the right border of the column to make it any size you want.
To quickly enter the current date in your worksheet, select any empty cell, press CTRL+; (semicolon), and then press ENTER, if necessary.
To enter a date that will update to the current date each time you reopen a worksheet or recalculate a formula, type =TODAY() in an empty cell, and then press ENTER.
When you type something like 2/2 in a cell, Excel for the web thinks you’re typing a date and shows it as 2-Feb. But you can change the date to be shorter or longer.
To see a short date like 2/2/2013, select the cell, and then click Home > Number Format > Short Date. For a longer date like Saturday, February 02, 2013, pick Long Date instead.
Tips for displaying dates
If a cell displays ##### after you apply date formatting to it, the cell probably isn’t wide enough to show the whole number. Try dragging the column that contains the cells with #####. This will resize the column to fit the number.
To enter a date that will update to the current date each time you reopen a worksheet or recalculate a formula, type =TODAY() in an empty cell, and then press ENTER.
Need more help?
Excel Iso Date Format
You can always ask an expert in the Excel Tech Community, get support in the Answers community, or suggest a new feature or improvement on Excel User Voice.