Analyze a messy spreadsheet
Stop fighting Excel. Ask Claude to clean, pivot, and chart — with the formulas you'd have written, if you had the time.
Spreadsheets arrive from other teams already partly-broken: merged cells, inconsistent dates, rogue blanks, and formulas someone wrote and nobody understands. Claude reads Excel natively, cleans the mess, produces the pivot or chart you asked for, and writes the formulas back so you can ship the file.
Recommended
The 2 tools we'd reach for first
Anthropic's Excel skill handles the full read/edit/save lifecycle on .xlsx files. The reference tool for this job.
Cowork's data plugin adds broader CSV/JSON/Parquet support on top of Excel.
Alternatives
Use these when your stack calls for them
Bundled with Cowork — includes Excel and other file handling out of the box.
Supporting
Helpful adjacent tools to complete the workflow
Pair with PDF skill when the source data arrives as a scanned table.
Not sure where to start?
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