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Search the error code on your screen. Get a plain-English explanation, the usual causes, a step-by-step fix and a safer formula to copy — without uploading the workbook.
Runs in your browserUpdated October 31, 202617 errors · Causes, fixes and safe formulas
The short answer
An Excel error code tells you what type of value or reference broke, not just that something is wrong. #VALUE! means the wrong data type, #REF! means a deleted reference, #N/A means a lookup missed, #DIV/0! means a zero denominator and #SPILL! means the dynamic-array result is blocked. Match the code, fix the cause, then test the formula again.
Start with the error code
What is Excel telling you?
17 errors covered
#VALUE!
Wrong value type
#VALUE! means Excel expected a number, date or logical value but found text, an empty cell or a value from another data type. The fix is to convert the input, remove hidden characters, or guard the calculation with IFERROR.
A formula that adds, subtracts or compares cells returns #VALUE!
The same formula works for some rows but fails for others
Dates or numbers look correct but are stored as text
Why it happens
Text in a cell that the formula treats as a number, such as "12 kg" instead of 12.
A date imported from a CSV, PDF or website that Excel stored as text.
A non-printing character, leading apostrophe or double space in a numeric cell.
An array formula that returns different-sized arrays, or an operation on a whole column that includes text headers.
A function argument has the wrong type — for example, a text value where a number is required.
How to fix it
1
Convert text numbers with VALUE or a number format
If the cell only looks like a number, VALUE converts it. For a whole column, use Text to Columns or multiply by 1 in a helper column, then paste the result back as values.
fx
=VALUE(TRIM(A2))
2
Remove invisible characters
TRIM removes extra spaces and CLEAN removes non-printing characters. Combine them when data comes from a PDF or CRM export.
fx
=VALUE(CLEAN(TRIM(A2)))
3
Guard the result with IFERROR
If a bad row should not stop the report, wrap the calculation. This hides the error but does not fix the source — use it only after you understand the cause.
fx
=IFERROR(A2*B2,"")
4
Check the formula's argument types
Use the Evaluate Formula tool (Formulas → Evaluate Formula) to step through the calculation. The step that first shows #VALUE! is the argument to correct.
A safer formula pattern
fx
=IFERROR(VALUE(TRIM(A2))*B2,"")
Converts a text number after trimming spaces, then hides the error if the cell cannot be converted.
Open a dedicated guide for the exact meaning, common causes, step-by-step fixes and a safe formula pattern — then come back to the interactive fixer to test it.
Fixing more than one formula? Paste the whole list into the Workbook Health Check and get a ranked audit with a CSV export. For the data behind the most common student faults, see the Excel Error Index 2026.
How to use it
1Find the exact error code in the Excel cell or the warning dialog.
2Search the code or symptom, or pick it from the list.
3Check the listed causes against your formula and source data.
4Apply a fix, then use the safer formula pattern or run the formula checker.
Questions about the error fixer
What is the fastest way to fix an Excel error?+
Read the code first. #VALUE! is a data-type problem, #REF! is a deleted reference and #N/A is a missing lookup. Fix the input or reference before wrapping the formula in IFERROR, otherwise you hide the real problem.
Does this tool upload my formula or workbook?+
No. The error reference runs in your browser and does not ask for a file. If you want to test the syntax of your own formula, use the separate formula checker — that also runs locally.
Why does #VALUE! appear when the numbers look correct?+
The cell may be stored as text, contain a non-breaking space, or include a unit such as "kg". Use VALUE and TRIM, or check with ISNUMBER, before changing the formula.
Should I use IFERROR on every formula?+
No. IFERROR is useful for expected missing lookups and dashboards, but it also hides genuine mistakes. Fix the cause first, then add a fallback only where a blank or message is an acceptable business result.
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