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Excel to JSON
Open an .xlsx, .xls or .csv file and convert any sheet to a clean JSON array of objects, entirely in your browser with SheetJS. Nothing is uploaded.
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Click or drop an Excel / CSV file
Processed locally in your browser — never uploaded.
Parsed locally with SheetJS — your file is never uploaded.
🔒 This tool runs entirely in your browser. Your data is never uploaded.
Frequently asked questions
What files can I convert?＋
Excel workbooks and CSV files; pick the sheet and copy the resulting JSON.
How are rows converted?＋
The header row becomes object keys and each following row becomes an object in a JSON array.
Is my spreadsheet uploaded?＋
No — conversion happens in your browser with SheetJS.