# VBA DateDiff Function

Published on :

21 Aug, 2024

Blog Author :

N/A

Edited by :

Ashish Kumar Srivastav

Reviewed by :

Dheeraj Vaidya

DateDiff function in VBA is an inbuilt function in VBA, categorized under the Date and Time function in VBA. We can use this function to get the difference between two dates. This function takes three arguments. The first argument is what part of the difference we want, which can be years, days or months, or seconds and two dates, and the result is an integer.

##### Table of contents

## DATEDIFF Function in VBA

The DateDiff function in VBA calculates the difference between two dates in days, months, quarters, and years.

In Excel, finding the difference between two dates has many ways. You do not need a special formula to calculate the difference between two dates.

For example, look at the below image.

If we want to calculate the difference between these two dates, we can subtract date 1 from date 2.

It has given us the difference between two dates in several days. However, it is a problem with this generic formula. If we need the difference in months, years, quarters, etc., it cannot give.

This article will show you how to use this DateDiff function in VBA.

### What is the DATEDIFF Function in Excel VBA?

The Datediff in VBA stands for "Date Difference between two dates."

This function can give us the number of the time interval between two dates. When we want to find the difference between two dates, we can find it in days, weeks, months, quarters, etc.

To understand the function, look at the below syntax of the function.

**Interval: **This is nothing but in what way you want to calculate the date difference. The same list is below, whether in days, months, weeks, quarters, etc.

**Date 1: **What is the first date you want to find the difference?

**Date 2:** What is the second date you want to find the difference from Date 1?

Here, the formula is **Date 2 – Date 1.**

**: **What is the first day of the week? We can agree with the following arguments.

** :** What is the year's first week?

**: **What is the year's first week? We can enter the following arguments.

### Examples of DATEDIFF Function in Excel VBA

The following are examples of Excel VBA DateDiff.

#### Example #1 - To Find Differences in Days

Assume you have two dates, “15-01-2018” and “15-01-2019”. Let’s find all kinds of differences between these two dates.

**Step 1: **Create a macro name first.

**Code:**

Sub DateDiff_Example1() End Sub

**Step 2: **Define Two Variables as Date.

**Code:**

Sub DateDiff_Example1() Dim Date1 As Date Dim Date2 As Date End Sub

**Step 3: **Now, for the Date1 variable, assign "15-01-2018," and for the Date2 variable, assign "15-01-2019."

**Code:**

Sub DateDiff_Example1() Dim Date1 As Date Dim Date2 As Date Date1 = "15-01-2018" Date2 = "15-01-2019" End Sub

**Step 4: **Now, define one more variable, “As Long,” to store results.

**Code:**

Sub DateDiff_Example1() Dim Date1 As Date Dim Date2 As Date Dim Result As Long Date1 = "15-01-2018" Date2 = "15-01-2019" End Sub

**Step 5: **Now, assign the value for this variable through the DateDiff function in VBA.

**Code:**

Sub DateDiff_Example1() Dim Date1 As Date Dim Date2 As Date Dim Result As Long Date1 = "15-01-2018" Date2 = "15-01-2019" Result =DateDiff( End Sub

**Step 6:** The first argument is what kind of difference we need between these dates. We need to find the number of days, so supply the argument as "D."

**Code:**

Sub DateDiff_Example1() Dim Date1 As Date Dim Date2 As Date Dim Result As Long Date1 = "15-01-2018" Date2 = "15-01-2019" Result =DateDiff("D", End Sub

**Step 7: **What is the first date to find the difference? Our first date is "15-01-2018," which we have already assigned to the variable "Date1". So, supply the variable name here.

**Code:**

Sub DateDiff_Example1() Dim Date1 As Date Dim Date2 As Date Dim Result As Long Date1 = "15-01-2018" Date2 = "15-01-2019" Result =DateDiff("D",Date1, End Sub

**Step 8: **What is the second date to find the difference? The second date is "15-01-2019," which holds the value through the variable "Date2.".

**Code:**

Sub DateDiff_Example1() Dim Date1 As Date Dim Date2 As Date Dim Result As Long Date1 = "15-01-2018" Date2 = "15-01-2019" Result = DateDiff("D", Date1, Date2) End Sub

**Step 9: **Ignore the last two parameters. Now, assign the variable "Result" value through the VBA message box.

**Code:**

Sub DateDiff_Example1() Dim Date1 As Date Dim Date2 As Date Dim Result As Long Date1 = "15-01-2018" Date2 = "15-01-2019" Result = DateDiff("D", Date1, Date2) MsgBox Result End Sub

Now, run the code using the F5 key or manually. We will get the difference between these two dates in numbers.

So, from “15-01-2018” to “15-01-2019,” the exact difference is one year, so we got 365 days.

Like this, we can find the difference between two dates in time intervals.

#### Example #2 - To Find Difference in Months

**Code:**

Sub DateDiff_Example2() Dim Date1 As Date Dim Date2 As Date Dim Result As Long Date1 = "15-01-2018" Date2 = "15-01-2019" Result = DateDiff("M", Date1, Date2) MsgBox Result End Sub

Run this code using the F5 key. You can run it manually to show the result as given below.

#### Example #3 - To Find Difference in Years

**Code:**

Sub DateDiff_Example3() Dim Date1 As Date Dim Date2 As Date Dim Result As Long Date1 = "15-01-2018" Date2 = "15-01-2019" Result = DateDiff("YYYY", Date1, Date2) MsgBox Result End Sub

Run this code using the F5 key or manually to see the result.

#### Assignment as a Practice

We hope you have understood the function of VBA DateDiff. Take a look at the below homework for you. Find the difference between the below dates in "Months."

If you have not found the way, below is the readymade code.

**Code:**

Sub Assignment() Dim k As Long For k = 2 To 8 Cells(k, 3).Value = DateDiff("M", Cells(k, 1), Cells(k, 2)) Next k End Sub

You can run this code manually or press the F5 key to see the result.

### Recommended Articles

This article is a guide to VBA DateDiff Function. Here we learn how to use DateDiff Function to find differences in days, months, and years in Excel VBA, practical examples, and a downloadable template. Below you can find some useful Excel VBA articles: -