Excel Formula Fixer
Clean common copy-and-paste problems without pretending to understand your workbook. CellLingo can add a missing equals sign, normalize smart quotes, convert argument separators and flag structural issues that still need human review.
CellLingo only applies changes it can describe. Broken ranges such as #REF!, wrong criteria and workbook-specific logic are never silently guessed.
What this fixer is designed to handle
Formula errors often come from transport rather than logic: a formula copied from a document loses its leading equals sign, curly “smart quotes” replace straight quotes, or a formula written for a comma locale is pasted into a semicolon locale. These are mechanical problems that can be corrected without evaluating workbook data.
What it deliberately does not guess
CellLingo does not invent missing ranges, table names, named ranges or business rules. If a formula contains #REF!, an unknown function, an unmatched closing parenthesis or logic that depends on workbook values, the result is flagged for review instead of being rewritten speculatively.