← All tools

CSV ↔ Excel ↔ JSON Converter

Convert spreadsheets between CSV, Excel (XLSX) and JSON right in your browser. Reads XLSX, XLS, XLSB and CSV files. Your data is never uploaded.

Choose a file

Drop a spreadsheet here or click to browse

CSV, XLSX, XLS, XLSB, JSON

💡 XLSB and XLS are read-only inputs — output is XLSX, CSV or JSON. Only the first sheet is converted for CSV/JSON.