Formula integrity
Broken references, formula gaps, hard-coded overrides, pattern drift, and circular dependencies.
Spreadsheet analysis for real-world work
Spreadsheet Checkup
Catch spreadsheet problems before they become real problems.
Upload your Excel workbook for a clear look at broken formulas, hidden dependencies, data inconsistencies, and other common mistakes. Know where to look before you rely on the numbers.
Free to use
No signup
No workbook history
Analyze your Excel file
A clear report of errors, risks, and hidden issues.
Processed for this request, without a workbook history. Privacy details
Want to see what you'll get?See a demo report
What it checks
View all checks
A deeper look at your spreadsheets.
Deterministic checks and carefully labeled review signals help you focus on the issues that matter.
Hidden assumptions
Numeric constants, external links, volatile functions, hidden sheets, and manual calculation mode.
Data quality
Numbers stored as text, duplicate headers, inconsistent formats, whitespace, and structural anomalies.
Actionable findings
Understand the location, evidence, confidence, and a practical next step for each issue.
From upload to insights
A clear report.
A clear report.
A useful next step.
Start with what needs attention, then explore by worksheet, category, or priority. The evidence stays close to the explanation.
Explore the demo reportAn example from our intentionally flawed demo workbook.
Demo workbook24 issues · 37 technical findings
Sample report
Needs attention5
Review next10
Informational9
Start hereStrong evidence of problems
!
A formula has a broken referenceRisk Examples · B2
Needs attention!
A hard-coded value interrupts formulasImported Data · C4
Needs attentionEvidence, explanations, and recommended next steps.
A second look, not a stamp of approval.
Not every unusual cell is an error. Spreadsheet Checkup separates stronger defect signals from items that deserve review. It doesn't recalculate formulas, repair your file, or guarantee that your workbook is correct.
Common questions
A few things worth knowing.
What spreadsheet problems does it look for?
It checks formula integrity, repeated formula patterns, hard-coded assumptions, circular and broken references, suspicious totals, hidden dependencies, duplicate key fields, data-type inconsistencies, number-format drift, external links, hidden content, and other workbook-level review signals.
Does Spreadsheet Checkup prove my workbook is correct?
No. Some spreadsheet mistakes require business context that software cannot infer. The checker is designed to narrow your review to cells and workbook structures that deserve attention, while clearly separating stronger defect signals from lower-confidence heuristics.
Are uploaded Excel files stored?
The application does not provide workbook storage or uploaded-file history. A workbook is processed for the current request and is not intentionally retained by the application after that request. See the privacy page for the full explanation.
Can it analyze macro-enabled .xlsm files?
Yes. The checker can inspect .xlsx and .xlsm workbooks up to 10 MB. VBA presence is reported as workbook context, but macros are never executed.
Why flag hard-coded numbers inside formulas?
A number such as a tax rate, price, threshold, or growth assumption can be difficult to discover when it is repeated directly inside formulas. The checker looks for numeric constants participating in formula logic and also highlights repeated assumptions that may be easier to maintain as labeled input cells.
Will it change or repair my workbook?
No. The checker is read-only. It reports what it found, where it found it, the evidence behind the finding, and what you may want to inspect next. It does not silently rewrite formulas or workbook data.