VBA IsNumeric Function in Excel

VBA IsNumeric function in Excel is categorized as an Information function in VBA. It is a built-in function in MS Office Excel VBA. This function checks specified Expression is Numeric or not. It has one input parameter. It returns boolean value (True or False).

The IsNumeric function can be used only in VBA. We can’t use this function as a worksheet function. This function use in either procedure or function in a VBA editor window in Excel. We can use this VBA IsNumeric function any number of times in any number of procedures or functions. In the following section we learn what is the syntax and parameters of the IsNumeric function, where we can use this VBA IsNumeric function and real-time examples.

Table of Contents:

Overview
Syntax of VBA IsNumeric Function
Parameters or Arguments
Where we can apply or use VBA IsNumeric Function?
Example 1: Check an expression(100) is numeric or not
Example 2: Check given expression(100.123) is numeric or not
Example 3: Check an expression(“ABC”) is numeric or not
Example 4: Check an expression(“ABC123”) is numeric or not
Example 5: Check an expression(TRUE) is numeric or not
Instructions to Run VBA Macro Code
Other Useful Resources

Syntax of VBA IsNumeric Function

The syntax of the VBA IsNumeric function is

IsNumeric(Expression)

Note: The VBA IsNumeric function returns a boolean value.

Parameters or Arguments

The IsNumeric function has one input parameter or argument.
Where
Expression: It is a required parameter. The Expression that you want to evaluate.

Where we can apply or use VBA IsNumeric Function?

We can use this VBA IsNumeric function in MS Office 365, MS Excel 2016, MS Excel 2013, 2011, Excel 2010, Excel 2007, Excel 2003, Excel 2016 for Mac, Excel 2011 for Mac, Excel Online, Excel for iPhone, Excel for iPad, Excel for Android tablets and Excel for Android Mobiles.

Example 1: Check an expression(100) is numeric or not

Here is a simple example of the VBA IsNumeric function. This below example checks the specified number(100) is numeric or not. The output of below macro is TRUE.

'Check an expression(100) is numeric or not
Sub VBA_IsNumeric_Function_Ex1()
    
    'Variable declaration
    Dim iExpression As Integer
    Dim sOutput As Boolean
    
    iExpression = 100
    
    sOutput = IsNumeric(iExpression)
   
    'Display output message
    MsgBox "The expression(100) is numeric or not : " & sOutput, vbInformation, "VBA IsNumeric Function"
    
End Sub

Output: Here is the screen shot of the first example output.

Example 2: Check given expression(100.123) is numeric or not

Here is another example of the VBA IsNumeric function. This below example checks the specified number(100.123) is numeric or not. The output of below macro is TRUE.

'Check given expression(100.123) is numeric or not
Sub VBA_IsNumeric_Function_Ex2()
    
    'Variable declaration
    Dim iExpression As Double
    Dim sOutput As Boolean
    
    iExpression = 100.123
    
    sOutput = IsNumeric(iExpression)
   
    'Display output message
    MsgBox "The expression(100.123) is numeric or not : " & sOutput, vbInformation, "VBA IsNumeric Function"
    
End Sub

Output: Here is the screen shot of the second example output.

Example 3: Check an expression(“ABC”) is numeric or not

Here is a simple example of the VBA IsNumeric function. This below example checks the specified number(“ÄBC”) is numeric or not. The output of below macro returns False.

'Check an expression("ABC") is numeric or not
Sub VBA_IsNumeric_Function_Ex3()
    
    'Variable declaration
    Dim iExpression As String
    Dim sOutput As Boolean
    
    iExpression = "ÄBC"
    
    sOutput = IsNumeric(iExpression)
   
    'Display output message
    MsgBox "The expression('ABC') is numeric or not : " & sOutput, vbInformation, "VBA IsNumeric Function"
    
End Sub

Output:Here is the screen shot of the third example output.

Example 4: Check an expression(“ABC123”) is numeric or not

Here is a simple example of the VBA IsNumeric function. This below example checks the specified number(“ABC123”) is numeric or not. The output of below macro is False.

'Check an expression("ABC123") is numeric or not
Sub VBA_IsNumeric_Function_Ex4()
    
    'Variable declaration
    Dim iExpression As String
    Dim sOutput As Boolean
    
    iExpression = "ÄBC123"
    
    sOutput = IsNumeric(iExpression)
   
    'Display output message
    MsgBox "The expression('ABC123') is numeric or not : " & sOutput, vbInformation, "VBA IsNumeric Function"
    
End Sub

Output: Here is the screen shot of the fourth example output.

Example 5: Check an expression(TRUE) is numeric or not

Here is a simple example of the VBA IsNumeric function.This below example checks the specified number(TRUE) is numeric or not. The output of below macro is TRUE.

'Check an expression(TRUE) is numeric or not
Sub VBA_IsNumeric_Function_Ex5()
    
    'Variable declaration
    Dim iExpression As Boolean
    Dim sOutput As Boolean
    
    iExpression = True
    
    sOutput = IsNumeric(iExpression)
   
    'Display output message
    MsgBox "The expression(TRUE) is numeric or not : " & sOutput, vbInformation, "VBA IsNumeric Function"
    
End Sub

Output: Here is the screen shot of the fifth example output.