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Formula Parser

Parse formulas in-browser using Formualizer WASM, then inspect a practical explanation, dependencies, and advanced parser output.

Auto-recomputes after typing pauses
IdleExcelNormalized: =SUM(A1:A3)
Tokens
0
AST Nodes
0
Tree Depth
0
Operators
0
Explain

No parsed expression to explain yet.

References and function calls

References

No references found.

Function calls

No function calls found.

AST Tree
No AST output.
Raw token stream
#TypeRoleValuePosition
No tokens to display.
Raw AST JSON
{  "message": "No AST JSON available."}

Why use this Excel formula parser?

This tool helps spreadsheet users and developers debug complex formulas by showing syntax diagnostics, AST structure, reference dependencies, and evaluation flow in one view.

Common use cases

  • Check formula syntax before sharing across teams.
  • Understand nested formulas with readable evaluation steps.
  • Audit references and function calls for model reviews.
  • Prototype formulas before moving into production workbooks.

Related tools

FAQ: Excel formula parser

How do I parse an Excel formula online?

Paste your formula into the editor and pause typing. The parser auto-runs in your browser and shows diagnostics, references, AST structure, and evaluation steps.

Can this tool debug nested IF and complex formulas?

Yes. It handles deeply nested formulas, then breaks them into intermediate evaluation steps so you can understand operation order and identify fragile segments.

Does this parser show formula dependencies?

Yes. The references panel extracts cell and range dependencies, and the function panel lists all called functions found in your formula.

Can it fix formula syntax errors automatically?

It suggests safe fixes for common syntax issues (for example unmatched parentheses, trailing separators, and unclosed quotes). Suggested fixes are validated before shown.