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Convert Excel to CSV/JSON and CSV/JSON to Excel, fully in your browser.
100% private — your files are converted entirely in your browser and never uploaded to any server.
Drop an Excel file here, or click to browse
.xlsx or .xls — up to 20 MB
Convert Excel spreadsheets to CSV or JSON, and turn CSV or JSON back into a downloadable .xlsx workbook — all in your browser. Supports multi-sheet .xlsx and .xls files, sheet preview, header-row detection, array-of-objects or array-of-arrays output, ISO date formatting, and per-sheet or bulk export. Files are processed locally and never uploaded to any server.
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