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Excel to JSON Converter - Valid JSON Output

Convert an Excel sheet to JSON that parses. NaN, Infinity and #N/A are not valid JSON, so they become null. 007 stays a string. Runs in your browser, no upload.

Convert spreadsheet data

Select an XLSX, XLS, or CSV file. Parsing and conversion happen locally in your browser.

How to use this tool

  1. Enter or select your input.
  2. Run the tool and review the result.
  3. Copy or download the output when available.

About this tool

Convert an Excel sheet to JSON that parses. NaN, Infinity and #N/A are not valid JSON, so they become null. 007 stays a string. Runs in your browser, no upload.

Frequently asked questions

Is my data uploaded?

This tool processes input in your browser. Files and text are not sent to our server by this page.

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