Creating Excel spreadsheets (xlsx)

Claude can generate Excel spreadsheets (.xlsx) directly from natural language prompts on claude.ai. When you describe what you need — a budget tracker, a sales model, a data summary — Claude uses its code execution environment to programmatically build a real .xlsx file you can download and open immediately in Microsoft Excel or compatible software. The generated files contain working formulas, multiple sheets, charts, conditional formatting, and proper number formatting, not just static data tables. This capability works through Claude's built-in code execution sandbox, where it uses Python libraries (such as openpyxl and xlsxwriter) to construct the workbook. Because the file is generated programmatically, formulas are live and editable — change an input cell and dependent calculations update normally in Excel. Claude can also combine data from uploaded files (CSVs, PDFs, text files) into a single structured workbook. A separate but related product, the Claude for Excel add-in, embeds Claude directly as a sidebar inside Microsoft Excel for users who want AI assistance within their existing spreadsheet workflow rather than generating new files from scratch. The add-in is in beta and available to Max, Team, and Enterprise plan users.