Free Excel Audit Tool — No Install, No Add-in Required
Professional spreadsheet auditing shouldn't cost thousands of dollars or require installing desktop software. Excel Risk Check is free, works in your browser, and takes 30 seconds.
Why Most Excel Audit Tools Are Inaccessible
The established Excel auditing tools — PerfectXL, Operis Analysis Kit (OAK), Spreadsheet Detective — are professional-grade products with professional prices. Licenses run from $249 to over $2,000 per year. They require installation on a Windows desktop, often require IT approval or admin rights, and assume a specific enterprise environment with managed software deployment.
For an analyst checking a model before sending to a client, or an accountant doing a quick pre-close review, these tools are overkill and largely out of reach. The procurement process alone takes longer than the spreadsheet review. The result: most spreadsheets are shared without any formal audit, relying on the creator's self-review and whatever Ctrl+F for "#REF!" turns up.
Feature Comparison
| Feature | Excel Risk Check | PerfectXL | Operis OAK | Spreadsheet Detective |
|---|---|---|---|---|
| Price | Free (PDF report: $5) | $299+/yr | $2,000+/yr | $249+ |
| Platform | Browser (no install) | Desktop add-in | Desktop add-in | Desktop add-in |
| Setup required | None | Install + configure | Install + configure | Install + configure |
| Formula error scan | ✓ | ✓ | ✓ | ✓ |
| Circular references | ✓ | ✓ | ✓ | ✓ |
| Risk score (0-100) | ✓ | ✗ | ✗ | ✗ |
| Hidden sheet scan | ✓ | Partial | ✓ | Partial |
| Visual dependency map | ✗ | ✓ | ✓ | ✓ |
| Works without IT | ✓ | Depends | Depends | Depends |
When to Use Each Tool
Excel Risk Check is ideal for: quick health checks before sharing a file, checking an inherited spreadsheet you didn't build, pre-submission validation for deliverables, and regular audits where a repeatable risk score helps track quality over time.
Desktop tools (PerfectXL, OAK) are better for: deep visual dependency mapping in very complex financial models with hundreds of sheets, enterprise-wide spreadsheet governance programs where a central inventory and management layer is needed, and formal model auditing engagements that require a printed certificate or official model review report.
The tools aren't really competing for the same use case. If you need to check a spreadsheet right now, a browser-based tool with instant results and no setup is the right answer. If you're running a structured model validation practice across an institution, a desktop platform with deeper dependency visualization makes sense.
An Honest Assessment
For a CFO building a formal model validation program at an investment bank, a tool like OAK provides more depth — particularly the visual dependency maps that show how cells and sheets interconnect in complex models. For a financial analyst, consultant, or accountant who needs a fast, free health check on a spreadsheet, Excel Risk Check is the fastest path to finding real problems without a procurement process.
The gap the desktop tools don't address is accessibility. A $2,000/year license makes sense for a model risk team running 50 formal audits a year. It doesn't make sense for a one-time check before emailing a file to a board member.
What the Free Audit Includes
- Full formula error scan covering all sheets (not just the active one)
- Circular reference detection with chain identification
- Broken external link detection
- Hidden sheet, hidden row, and hidden column inventory
- Data quality check: empty rows, mixed column types, duplicate rows
- Structural analysis: file size, sheet count, merged cells, macro presence
- 0–100 risk score with category breakdowns (formula, reference, structural, data quality)
A PDF report with the full findings — suitable for sharing with clients, attaching to a file submission, or archiving — is available for $5 per report.
Frequently Asked Questions
Is there really a free Excel audit tool that works online?
Yes. Excel Risk Check provides full formula, structural, and data quality auditing with no account, no install, and no cost. Upload a file, get results in 30 seconds.
Why is it free?
The basic audit is free because we want to make spreadsheet quality accessible to everyone. We charge $5 for a PDF report that you can share or archive. We also offer API access for developers and teams that want to integrate auditing into their workflows.
How does it compare to Excel's built-in auditing?
Excel's Formula Auditing works one cell at a time on the active sheet. Our tool scans the entire workbook at once, covers hidden sheets, and produces a comprehensive report with a risk score. It's fundamentally a different workflow.
What file sizes are supported?
We support .xlsx and .xlsm files up to about 50MB. Most spreadsheets fall well within this limit. Very large files (30MB+) may take longer to analyze.