excel functions

MS Excel: ISNUMERIC Function (VBA)

This Excel tutorial explains how to use the Excel ISNUMERIC function with syntax and examples.


The Microsoft Excel ISNUMERIC function returns TRUE if the expression is a valid number. Otherwise, it returns FALSE.


The syntax for the ISNUMERIC function in Microsoft Excel is:

IsNumeric( expression )

Parameters or Arguments

It is a variant to be evaluated as a number.

Applies To

The ISNUMERIC function can be used in the following versions of Microsoft Excel:

  • Excel 2016, Excel 2013, Excel 2011 for Mac, Excel 2010, Excel 2007, Excel 2003, Excel XP, Excel 2000

Type of Excel Function

The ISNUMERIC function can be used in Microsoft Excel as the following type of function:

  • VBA function (VBA)

Example (as VBA Function)

The ISNUMERIC function can only be used in VBA code in Microsoft Excel.

Let's look at some Excel ISNUMERIC function examples and explore how to use the ISNUMERIC function in Excel VBA code:

Result: TRUE

IsNumeric("Tech on the Net")
Result: FALSE

Result: TRUE

Result: FALSE

For example:

Dim LValue As Boolean

LValue = IsNumeric("Tech on the Net")

In this example, the variable called LValue would contain FALSE as a value.