Excel ISERROR Function
Summary
The Excel ISERROR function returns TRUE for any error type excel generates, including #N/A, #VALUE!, #REF!, #DIV/0!, #NUM!, #NAME?, or #NULL! You can use ISERROR together with the IF function to test for errors and display a custom message, or run a different calculation when found.
Purpose
Test for any error
Return value
A logical value (TRUE or FALSE)
Syntax
=ISERROR (value)
Arguments
- value - The value to check for any error.
Version
Usage notes
Use the ISERROR function to see if a cell contains any error message, including #N/A, #VALUE!, #REF!, #DIV/0!, #NUM!, #NAME?, or #NULL!
For example, =ISERROR(A1) will return TRUE if A1 is is displaying an one of the errors mentioned above , and FALSE if not.
Frequently, value is supplied as a cell address, but you can use it to trap errors inside more complex formulas as well.
ISERROR formula examples
At the core of this formula, we build a list of row numbers for a given file. Then we use the MAX function to get the largest row number, which corresponds to the last revision (last occurrence) of that file.
To find...
The #NULL! error is quite rare in Excel, and is usually the result of a typo where a space character is used instead of a comma (,) or colon (:) between two cell references. Technically, the space character is the "...
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About spilling and the #SPILL! error
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About the #DIV/0! error
The #DIV/0! error appears when a formula attempts to divide by zero, or a value equivalent to zero. Like other errors, the #DIV/0! is useful, because it tells you there is something missing or...
The #NUM! error occurs in Excel formulas when a calculation can't be performed. For example, if you try to calculate the square root of a negative number, you'll see the #NUM! error. The examples below show formulas...
The #VALUE! error appears when a value is not the expected type. This can occur when cells are left blank, when a function that is expecting a number is given a text value, and when dates are evaluated as text by Excel...
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In this example, the goal is to count the number of cells in a range that do not contain errors.
Working from the inside out, we first use the ISERROR function on the entire range:
ISERROR(B5:B14) // check all 10...
FIND returns the position (as a number) of the first occurrence of a space character in the text. This position, minus one, is fed into the LEFT function as num_chars.
The LEFT function then extracts characters...
Working from the inside out, the ISERRROR function returns TRUE when a value is a recognized error, and FALSE if not.
When given a range of cells (an array of cells) ISERROR function will return an array of TRUE/FALSE...
The #NAME? error occurs when Excel can't recognize something. Frequently, the #NAME? occurs when a function name is misspelled, but there are other causes, as explained below. Fixing a #NAME? error is usually just a...
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Trapping errors can make your spreadsheets more professional by making them less cluttered and more friendly to use. In this video, we'll look at some ways to trap errors in a formula.
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