What is #num! in Google Sheets?
#NUM! means the formula hit an invalid numeric result, like a root of a negative number or a number too large to represent.
When to use it
Use error messages as a checklist when a formula returns an unexpected result or blocks a dependent report.
When to skip it
Do not treat every warning as fatal; some loading or circular notices are expected during imports or iterative models.
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Related blog posts
Guides that explain #NUM! in more depth.
Most Common Errors and How To Handle Them in Google Sheets
Most Common Errors and How To Handle Them in Google Sheets #N/A error #REF! error #NAME? error #DIV/0! Error #VALUE! Error #NUM! error #NULL! error
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Formula errors in Google Sheets
Formula errors are typed messages in cells when something prevents a valid result. Each code points to a different failure mode: bad reference, missing lookup, type mismatch, divide by zero, unknown name, or blocked array spill. Learning the vocabulary speeds debugging and keeps dashboards trustworthy for decision makers.
Read guide →#REF! error
#REF! means a formula references a cell or range that no longer exists. Common causes include deleted rows or columns, removed sheets, broken IMPORTRANGE, or cut-paste that orphaned an address. The error spreads to every dependent formula until you repair the link.
Read guide →#VALUE! error
#VALUE! means Google Sheets cannot interpret an argument as the type the function expects. Common causes include text in a math formula, invalid dates, wrong delimiter locale, or passing a range where a scalar is required.
Read guide →#NAME? error
#NAME? means Google Sheets does not recognize a name in your formula. That can be a misspelled function, a named range that does not exist, text used without quotes, or a function name from the wrong language locale.
Read guide →Done reading about #NUM!?
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