ISNUMBER function - Zoho Sheet - Help Guide


Returns TRUE if the given value is a number or a logical value, and FALSE otherwise.




value: The value to test. E.g. 12












Get a hands-on experience of the function in the embedded range below. 

Possible Errors





  • The function could not find the value it was asked to look for. Commonly occurs in VLOOKUP and similar functions.


  • The function name is incorrect or invalid.

  • The given defined name (if any) is invalid.

  • There is a typo in the defined name used in the function.

  • Double quotes are missing for text values in the function.

  • Colon missing in a cell range reference.


  • The given argument's data type is incorrect or invalid.
    For example, the function =DATE(A1:A3) will return a #VALUE error when a text value is present in the range.


  • The given cell reference is incorrect or invalid. This error may occur when a cell/range has been deleted, moved, or pasted over.


Similar Functions








  • ISNA





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                                                                                    • ISFORMULA

                                                                                      Returns TRUE if the given cell contains a formula, and FALSE otherwise.   Syntax   ISFORMULA(cell) cell: The cell reference to test. E.g. A2   Examples   Formula Result =ISFORMULA(A2) TRUE =ISFORMULA(A3) FALSE =ISFORMULA(A4) TRUE Get a hands-on ...
                                                                                    • ISNONTEXT

                                                                                      Returns FALSE if the given value is or refers to text, and TRUE otherwise.   Syntax   ISNONTEXT(value) value: The value to test. E.g. A2   Examples   Formula Result =ISNONTEXT(A2) FALSE =ISNONTEXT(A3) TRUE =ISNONTEXT(A4) TRUE Get a hands-on ...
                                                                                    • ISREF

                                                                                      Returns TRUE if the given value is a reference to a cell or range of cells, and FALSE otherwise.   Syntax   ISREF(value) value: The value to test. E.g. A7   Remarks ISREF function returns TRUE for defined names as well. Examples   Formula Result ...
                                                                                    • ISBLANK

                                                                                      Returns TRUE if a cell is blank/empty, and FALSE otherwise.   Syntax   ISBLANK(cell) cell: The cell reference to test. E.g. A2   Examples   Formula Result =ISBLANK(A2) FALSE =ISBLANK(A3) TRUE =ISBLANK(A4) TRUE Get a hands-on experience of the ...
                                                                                    • ISEVEN

                                                                                      Returns TRUE if the value is an even number, and FALSE otherwise.   Syntax   ISEVEN(value) value: The value to evaluate. Signs and decimal numbers are ignored. E.g. 2   Examples   Formula Result =ISEVEN(2) TRUE =ISEVEN(3) FALSE =ISEVEN(-4) TRUE Get a ...
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