VBA DateAdd Function

Excel VBA DateAdd Function

DateAdd function is categorized under the date and time function in VBA and this function has an output value as a date, it takes input as a format of date and adds it to the current date to return a new date, the syntax for this function takes three arguments interval, the number and the date.

Using DateAdd function we can add and subtract days, months, and years from the given date. Date in excel is part and parcel of our daily work, we cannot work in excel without date, time, and other important stuff. Adding one date to another date, subtracting one date from another is the common process. In the regular worksheet, we simply do arithmetic operations and get the result. In VBA we have the function called DateAdd which will do the job.

Syntax

Interval: Interval is nothing but what is the kind of value you want to add or subtract. For example, whether you want to add or subtract a month, whether you want to add or subtract days, whether you want to add or subtract a year, whether you want to add or subtract quarter, etc…

Below is a list of codes and descriptions.

• Number: The number of months, days, or week (as provided in the interval) we want to add or subtract to the date.
• Date: The actual date value we are doing the arithmetic operation.

For example, if you have the date “14-Mar-2019” and you want to add 2 days to the date use the below code:

DateAdd (“d”, 2, “14-03-2019”)

The result of the above code is: 16-03-2019

How to Use Dateadd Function in VBA?

Example #1 – Add Date

To start the proceedings lets apply simple DateAdd function. Assume you are working with the date “14-03-2019”.

Step 1: Start the subprocedure by creating a macro name.

Step 2: Define the variable as Date.

Code:

Sub DateAdd_Example1()

Dim Month As Date

End Sub

Step 3: For this variable assign value.

Code:

Sub DateAdd_Example1()
  Dim NewDate As Date

  NewDate =

End Sub

Step 4: Start the DateAdd formula.

Code:

Sub DateAdd_Example1()
  Dim NewDate As Date

  NewDate = DateAdd(

End Sub

Step 5: What is the operation we want to do. We want a day to the date. So the interval is “d”.

Code:

Sub DateAdd_Example1()
    Dim NewDate As Date

   NewDate = DateAdd("d",

End Sub

Step 6: How many days we need to add, I have to add 5 days.

Code:

Sub DateAdd_Example1()
   Dim NewDate As Date

   NewDate = DateAdd("d", 5,

End Sub

Step 7: Our date is “14-03-2019”

Code:

Sub DateAdd_Example1()
   Dim NewDate As Date

   NewDate = DateAdd("d", 5, "14-03-2019")

End Sub

Step 8: Show the result of the variable in the VBA message box.

Code:

Sub DateAdd_Example1()
  Dim NewDate As Date

  NewDate = DateAdd("d", 5, "14-03-2019")
  MsgBox NewDate

End Sub

If I run this code I should get the date as 19-03-2019.

In my system date format is “mm-dd-yyyy”, so the result is showing as per the system date settings.

However, we can modify this by applying VBA FORMAT function.

Code:

Sub DateAdd_Example1()
  Dim NewDate As Date

  NewDate = DateAdd("d", 5, "14-03-2019")
  MsgBox Format(NewDate, "dd-mmm-yyyy")

End Sub

Now the result should in like this “19-Mar-2019”.

Example #2 – Add Months

To add months below is the code

Code:

Sub DateAdd_Example2()
  'To add months
  Dim NewDate As Date

  NewDate = DateAdd("m", 5, "14-03-2019")
  MsgBox Format(NewDate, "dd-mmm-yyyy")

End Sub

The result will be:

Example #3 – Add Years

To add years using DateAdd use the below code.

Code:

Sub DateAdd_Example2()
  'To add year
  Dim NewDate As Date

  NewDate = DateAdd("yyyy", 5, "14-03-2019")
  MsgBox Format(NewDate, "dd-mmm-yyyy")

End Sub

The Result will be:

Example #4 – Add Quarter

To add quarter below is the code

Code:

Sub DateAdd_Example2()
  'To add quarter
  Dim NewDate As Date

  NewDate = DateAdd("Q", 5, "14-03-2019")
  MsgBox Format(NewDate, "dd-mmm-yyyy")

End Sub

The Result will be:

Example #5 – Add Weekday

To add weekdays below is the code

Code:

Sub DateAdd_Example2()
  'To add weekdays
  Dim NewDate As Date

  NewDate = DateAdd("W", 5, "14-03-2019")
  MsgBox Format(NewDate, "dd-mmm-yyyy")

End Sub

The Result will be:

Example #6 – Add Week

To add week below is the code

Code:

Sub DateAdd_Example2()
  'To add Week
  Dim NewDate As Date

  NewDate = DateAdd("WW", 5, "14-03-2019")
  MsgBox Format(NewDate, "dd-mmm-yyyy")

End Sub

The Result will be:

Example #7 – Add Hour

To add hour below is the code

Code:

Sub DateAdd_Example2()
  'To add hour
  Dim NewDate As Date

  NewDate = DateAdd("h", 5, "14-03-2019")
  MsgBox Format(NewDate, "dd-mmm-yyyy hh:mm:ss")

End Sub

The Result will be

Example #8 – Subtract Date

In order to add we have supplied positive numbers, to subtract we need to supply negative numbers that are all.

In order to subtract 3 months from the supplied date below is the code.

Code:

Sub DateAdd_Example3()
  'To add hour
  Dim NewDate As Date

  NewDate = DateAdd("m", -3, "14-03-2019")
  MsgBox Format(NewDate, "dd-mmm-yyyy")

End Sub

The result of this code is:

If deduct 3 months from the date 14^th March 2019 it will go back to the previous year.

Recommended Articles

This has been a guide to VBA DateAdd Function. Here we learn how to use VBA DateAdd function to add & subtract days, months & years from the given date along with practical examples and a downloadable excel template. Below you can find some useful excel VBA articles –

• VBA Case Statement Examples
• Weekday in VBA
• VBA Select Case
• DateSerial in VBA