Excel & Spreadsheet Tools
View, analyze, clean, and convert spreadsheet data between XLSX, CSV, TSV, and JSON. No spreadsheet data ever leaves your device.
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Spreadsheet Viewer (Excel, CSV, TSV)
View Excel (XLSX), CSV, and TSV spreadsheets with multi-sheet tabs and real-time search.
In-browser • Free
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CSV ↔ Excel (XLSX) Converter
Convert CSV files to formatted XLSX workbooks, or extract XLSX sheets to clean CSV.
In-browser • Free
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Spreadsheet (Excel / CSV) ↔ JSON Converter
Convert Excel or CSV data into JSON arrays of objects, or JSON datasets into XLSX workbooks.
In-browser • Free
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Spreadsheet Clean, Transpose & Statistics
Calculate numeric column statistics, transpose rows and columns, and strip duplicate records.
In-browser • Free