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AI Spreadsheet Analyst

Ask questions about a CSV or Excel workbook, inspect its columns, and get transparent calculations, matching rows, and grouped comparisons. Files and cell values stay in your browser; AI receives only the question and workbook schema to suggest a calculation plan.

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How this spreadsheet analyst works

Ask questions about a CSV or Excel workbook and get supported calculations, grouped comparisons, charts, or matching rows. The AI suggests a calculation plan; the browser checks and runs it against your data.

Privacy

Your workbook and cell values stay in your browser and are not sent to the AI provider. The planner receives your question, column names and inferred types, and row count. A previous result summary is sent only if you opt in.

Files and size

  • CSV: no fixed file-size or row-count cap; up to 200 columns. Very large files may use substantial browser memory or make the tab unresponsive.
  • Excel (.xlsx): up to 20,000 data rows, 200 columns, and 500,000 populated cells per sheet; selected workbook XML is limited to 25 MB after extraction.
  • Password-protected and older .xls files are unsupported. Formulas are not recalculated; cached results are used when available.

Analysis limits

  • Supports count, sum, average, minimum, maximum, grouped count/sum/average, and matching rows, with at most one simple filter.
  • Grouped results show the top 100 groups; charts display up to 12 bars. Matching-row results show the first 100 rows.
  • It does not join files, recalculate formulas, perform advanced statistics, verify data quality, use outside facts, prove causation, or predict future results. Ambiguous number formats may be treated as text.
Your question, column names and types, and row count are sent to OpenWebStore’s backend and configured AI provider to suggest a plan. A prior calculated summary is sent only if you opt in for a follow-up. Workbook files and cell values are processed locally and are not sent. Column names or text in your question can themselves be sensitive. TurboCloak is not used for this tool; provider terms apply.Discover more apps