Excel to CSV / JSON Converter

Extract spreadsheet sheets from Excel (.xlsx, .xls) files and convert them into CSV or JSON table format.

How It Works & Processing Standards

Extract spreadsheet sheets from Excel (.xlsx, .xls) files and convert them into CSV or JSON table format.

Current Limits

  • Desktop max file size: 50MB
  • Mobile max file size: 20MB

Excel to CSV / JSON Converter is a 100% free, browser-based online utility. All calculations and file conversions run locally inside your browser (Local-First) without sending data to remote servers, keeping your documents and inputs strictly private.

How to Use Excel to CSV / JSON Converter

  1. 1
    Upload Excel FileDrop your .xlsx or .xls workbook into the converter.
  2. 2
    Select Sheet & FormatChoose target worksheet and desired output format (CSV, TSV, or JSON).
  3. 3
    Download Converted DataCopy or save the converted table file.

Examples

Convert XLSX Sheet to CSV
Input: Upload "report.xlsx" -> Select "Sheet1"
Result: id,product,revenue 1,Widget,500.00 2,Gadget,850.00

Common Use Cases

  • Converting complex Excel workbooks into CSV format for automated database loading
  • Extracting individual worksheet tables without installing Microsoft Office
  • Converting financial spreadsheets into JSON arrays for web application display

Frequently Asked Questions (FAQ)

Are my Excel workbooks uploaded to external servers?

No, all XLSX parsing and conversion executes 100% locally in your web browser, ensuring complete privacy.

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