Excel VBA DateAdd Function

The DateAdd function in VBA adds a time interval to a supplied date and/or time and returns the resultant date/time.

Syntax

Dateadd (Interval, Number, Date)

Parameter

Interval (required) – This parameter a string specifying the interval to be used.

It can take the following values:

• “d” - Days
• “h” - Hours
• “n” - Minutes
• “m” - Months
• “q” - Quarters
• “s” - Seconds
• “ww” – Weeks
• “yyyy” - Years

Number (required) – This parameter represents the number of intervals to add to the specified Date.

Date (required) – This parameter represents the date/time that you want to add the specified number of intervals to.

Return

This function returns the resultant date/time.

Example 1

Sub DateAddFunction_Example1()
 ' Adding days to the given date
 Dim oldDte As Date
 Dim newDte As Date
 Days = 78
 oldDte = #2/7/2020# 
 newDte = DateAdd("d", Days, oldDte)
 ' The variable newDate will return the date 4/25/2020
 Cells(1, 1).Value = newDte
 End Sub 

Output

4/25/2020

Example 2

Sub DateAddFunction_Example2()
 ''Adding 5 hours to the given time
 Dim oldDte As Date
 Dim newDte As Date
 Days = 5
 oldDte = #11/29/2020 7:40:40 AM#
 newDte = DateAdd("h", Days, oldDte)
 ' The variable newDate will return the date and time 11/29/2020 12:40 
 Cells(1, 1).Value = newDte
 End Sub 

Output

11/29/2020 12:40

Example 3

Sub DateAddFunction_Example3()
 ''Adding 5 months to the given date
 Dim oldDte As Date
 Dim newDte As Date
 moth = 5
 oldDte = #8/29/2020# 
 newDte = DateAdd("m", moth, oldDte)
 ' The variable newDate will return the date 1/29/2021 0:00
 Cells(1, 1).Value = newDte
 End Sub 

Output

1/29/2021 0:00