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Excel Formula Auditor

Audit XLSX formulas locally for malformed expressions, broken or external references, volatile and unknown functions, inconsistent formula regions, hard-coded replacements, missing cached values, and dependency cycles.

Saved sessions

Add an XLSX workbook

The workbook stays in this browser. Legacy .xls, macros, password-protected files, and desktop-Excel recalculation are not supported.

Private workbook formula audit

Workbook bytes, formulas, cached values, dependency graphs, findings, saved sessions, and exports stay in your browser and are excluded from BaseToolbox analytics.

Current limitations
  • Only modern XLSX is supported; legacy .xls, password protection, macros, Power Query, and external data refresh are not executed.
  • The formula parser covers a constrained Excel-compatible subset and reports unsupported names or functions instead of guessing.
  • Cached values may be stale because the audit does not reproduce desktop Excel's calculation engine.
  • Browser storage may be cleared or reclaimed, and private browsing may not preserve the workbook or report.

How the Excel formula audit works

1

Parse formulas safely

Read formula text and cached values without executing macros, links, or DDE content.

2

Build patterns and dependencies

Normalize relative formula shapes, inspect hard-coded gaps, map cell dependencies, and detect cycles.

3

Review and export findings

Inspect severity, worksheet, cell, and related addresses before exporting CSV, XLSX, JSON, or Markdown.

Excel formula audit FAQ

Is my workbook uploaded or executed?
Can this auditor recalculate formulas?
How are inconsistent formulas found?
Does the audit use an AI model?

Related Excel tools

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