Claude for Excel and CSV Data Analysis

Upload, Don''t Paste

Attach the CSV or spreadsheet directly instead of pasting rows. Claude sees headers, types and missing values, and you keep the full context window for analysis.

Practical Workflow

First ask for a data profile: row counts, column types, nulls, obvious outliers. Then ask one question at a time: top segments, trends over time, anomalies worth investigating. Finish by asking for the exact Excel formulas or Python to reproduce each finding.

Verify Everything

Spot-check every number against the file before trusting it. Ask Claude to show its working: which rows it counted, which filter it applied. AI arithmetic is confident and occasionally wrong.