The ISERROR function returns the boolean value TRUE if a given expression evaluates to an error and the boolean value FALSE otherwise.
ISERROR(any-expression)
any-expression: An expression to be tested. any-expression can contain any value.
Notes
It is often better to use the IFERROR function. The IFERROR function provides the functionality of ISERROR, but also allows any expression to be returned, based on the result. ISERROR can only return the boolean values TRUE or FALSE.
Examples |
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If B1 is a number value and D1 evaluates to 0, then: =IF(ISERROR(B1/D1), 0, B1/D1) returns 0 because division by zero results in an error. =IFERROR(B1/D1, 0) is equivalent to the previous example, but requires only one function. |