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ISNUMBER Excel Function

By Madhuri ThakurMadhuri Thakur

ISNUMBER Function in Excel

ISNUMBER Function (Table of Contents).

  • ISNUMBER in Excel
  • ISNUMBER Formula in Excel
  • How to Use ISNUMBER Function in Excel?

ISNUMBER in Excel

IsNumber is another Boolean type of function in excel which gives the output in TRUE and FALSE only. IsNumber function in excel is used to find whether a cell contains a numerical value or a number. If any cell contains a number stating from 0 to any digit, then IsNumber will return TRUE there or else for other than the number, it will return FALSE.

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Uses of ISNUMBER Function

ISNUMBER Function returns TRUE if a cell contains a number; otherwise, it returns FALSE. If a cell contains a TEXT, the function will return a FALSE. A cell contains a number or not, or if we want to check the result of any function is number, in these scenarios, we use ISNUMBER Function.

ISNUMBER Formula in Excel

Below is the ISNUMBER Formula in Excel :

ISNUMBER Formula in Excel

Where the passing argument is:

  • Value – The value which you want to check.

Note:

  • The ISNUMBER function returns TRUE if a value is a valid number.
  • The ISNUMBER function returns FALSE if the value is not a valid number like text, date, time, etc.

As a Worksheet function, it can be entered as a part of a formula in a cell. Thus, it can be used as below screenshot:

Where is it Found in Excel?

ISNUMBER Function is a built-in function in excel; hence it is found under the FORMULAS tab in excel. Please follow the below steps:

  • Click on the FORMULAS tab.

ISNUMBER Function step 1

  • Select the More Functions option.

ISNUMBER Function step 2

  • It will open a drop-down list of functions category. Click on the Information tab.

ISNUMBER Function step 3

  • After clicking on the Information tab, it will again open a drop-down list of functions. Click on the ISNUMBER function.

ISNUMBER Function step 4

  • It will open a dialog box for Function arguments.

ISNUMBER Function step 5

  • Enter the Value field with the value, which you want to check.

ISNUMBER Function step 6

How to Use ISNUMBER Function in Excel?

This function is very simple and easy compared to other functions in Microsoft Excel, which contains lots of arguments or parameters.

You can download this ISNUMBER Function Excel Template here – ISNUMBER Function Excel Template

Example #1

We have given the below data.

ISNUMBER Example 1-1

Now we will apply the ISNUMBER function on the above data:

ISNUMBER Example 1-2

The Result will be :

ISNUMBER Example 1-3

Drag & drop this formula for the rest data, and the final result is shown below:

ISNUMBER Example 1-4

Explanation:

  • If the supplied argument or value is a number, the ISNUMBER function will return TRUE. Like for value = 150, ISNUMBER(150) will return TRUE.
  • If the value is text, character, sentence, special character, or any value other than a number, the ISNUMBER function will return FALSE. Like for Value = “$”, ISNUMBER($) will return FALSE.

Example #2

Let’s take some mathematical expression:

ISNUMBER Example 2-1

Now we will apply the ISNUMBER Function on the above expressions to check that the result of these expressions is numeric or not.

ISNUMBER Example 2.2

The Result will be :

ISNUMBER Example 2.3

Apply the same rule for the rest values, and the final result is shown below:

ISNUMBER Example 2.4

Explanation:

  • The supplied value is the mathematical expression; hence the ISNUMBER function return as TRUE.

Things to Remember

  • If the supplied value is Excel date and time, the ISNUMBER function will return TRUE because they are numeric.
  • If a value is text or supplied number is entered as text, the ISNUMBER function will return FALSE.
  • Where there is a large amount of data, the ISNUMBER is very helpful. It helps in testing if the result of any function is a number or not.
  • The ISNUMBER function is a part of IS Functions that return TRUE or FALSE.
  • This function will never return any error value like #NAME!, #N/A! etc.

Recommended Articles

This has been a guide to ISNUMBER Function in Excel. Here we discuss the ISNUMBER Formula in Excel and How to use the ISNUMBER function in Excel and practical examples and downloadable excel templates. You can also go through our other suggested articles –

  1. Excel ISNUMBER Formula
  2. Negative Numbers in Excel
  3. Excel COLUMN to Number
  4. VBA Format Number
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