/txtutils

Excel to JSON / CSV Converter

Convert Excel (.xlsx, .xls) files to JSON or CSV with multi-sheet support and preview. Free online Excel converter — processed in your browser.

JSON format
CSV headers
Drag & drop your Excel file, or click to browseSupports .xlsx, .xls, .csv

About the Excel to JSON / CSV converter

Convert Excel workbooks (.xlsx, .xls) and CSV files into clean JSON or CSV. Preview any sheet before exporting, pick your delimiter, choose pretty or minified JSON, and merge every sheet into one file or a ZIP. Everything runs in your browser — your data is never uploaded.

Common use cases

  • Feed an API: turn a spreadsheet into JSON for imports or seeding.
  • Reformat data: switch delimiters or strip headers for another tool.
  • Split workbooks: export each sheet as its own CSV in a ZIP.

How it works

  1. Drop or select an Excel or CSV file.
  2. Preview a sheet and set your options.
  3. Download as JSON or CSV — single file or zipped.

Frequently asked questions

Is my file uploaded?

No. Parsing and conversion happen entirely in your browser — your data never leaves your device.

Can I convert multiple sheets at once?

Yes. Enable “Merge / zip all sheets” to export every sheet together as combined JSON or a ZIP of CSVs.