Lumarc DevTools

Converter Tools

CSV to JSON Converter

Convert CSV text with headers into formatted JSON arrays.

Processed locally — your data never leaves this browser. Input: CSV text Output: Formatted JSON array
CSV text

Processed locally — your data never leaves this browser.

Formatted JSON array

Tool discovery

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Example input and output

CSV rows

id,name
1,Ada
2,Linus
[
  {
    "id": "1",
    "name": "Ada"
  },
  {
    "id": "2",
    "name": "Linus"
  }
]

How to use CSV to JSON Converter

Paste or enter your csv text, adjust any options, then run the tool. The result appears in the output panel where you can copy or download it.

Related guides

What this tool does

The CSV to JSON Converter reads comma-separated values, uses the first row as field names and emits a JSON array of row objects. It is free to use and designed for technical workflows where pasted data should stay private.

Common use cases

  • Turn spreadsheet rows into fixtures
  • Inspect CSV exports
  • Prepare API seed data

Privacy and security

Processed locally — your data never leaves this browser. Lumarc DevTools does not include a backend, account system or hidden analytics in this initial release.

Limitations

  • All parsed values are strings unless converted later by your application.

Frequently asked questions

Does the first row become keys?

Yes. The first CSV row is treated as the header row for JSON object fields.