# Documentation/Calc Functions/ISERROR

Other languages:

ISERROR

Information

## Summary:

Determines if a specified cell or expression evaluates to an error type.

In contrast to Calc’s ISERR function, ISERROR returns TRUE if the argument evaluates to the value not available error (#N/A).

## Syntax:

ISERROR(Value)

## Returns:

Returns TRUE if the argument evaluates to an error and returns FALSE otherwise.

## Arguments:

Value is an expression, or a reference to a cell containing an expression, that is to be tested for an error condition.

• ISERROR does not propagate errors. If Value evaluates to an error then ISERROR returns TRUE and returns FALSE otherwise.
• Use the ISERR function to test for errors if you do not wish to include #N/A as an error condition.
• Use ISERROR in conjunction with the IF function to test for errors and take different actions in normal and error conditions.

## Examples:

Formula Description Returns
=ISERROR(12.34) Here the function returns the logical value FALSE. FALSE
=ISERROR("Hello world!") Here the function returns the logical value FALSE. FALSE
=ISERROR(TRUE()) Here the function returns the logical value FALSE. FALSE
=ISERROR(2021-12-18) Here the function returns the logical value FALSE. FALSE
=ISERROR(D1) where cell D1 contains the formula =1/0. Here cell D1 contains a #DIV/0! error and so the function returns the logical value TRUE. TRUE
=ISERROR(D2) where cell D2 contains the formula =SQRT(-7). Here cell D2 contains an invalid argument error (Err:502) and so the function returns the logical value TRUE. TRUE
=ISERROR(D3) where cell D3 contains the formula =NA(). Here cell D3 contains a #N/A error and so the function returns the logical value TRUE. TRUE

ISERROR