Code Lab · Bench

CSV ↔ JSON

Convert CSV to JSON and back

CSV

JSON

[
  {
    "name": "Jordan",
    "role": "Engineer",
    "active": "true"
  },
  {
    "name": "Maya",
    "role": "Designer",
    "active": "false"
  }
]

Private by designThis bench runs within your browser. Supported files stay on this device while you work.

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About this bench

About CSV ↔ JSON

Convert CSV to JSON and JSON back to CSV — great for moving spreadsheet data into code and vice versa.

Input

Paste the code or structured data you want to inspect, format, convert or validate.

Result

A local validation, transformation or copy-ready result based on the selected options.

Limits

This bench does not execute or deploy your project. Validate generated output in the real target environment before production use.

How to use CSV ↔ JSON

01Paste your CSV or JSON into the box above.
02Choose the conversion direction.
03Review the converted output.
04Copy or download it.

Frequently asked questions

Is my data uploaded?

Nothing is uploaded. This tool runs entirely in your browser, so your data is processed on your own device and never sent to a server.

Is it free?

Yes — it is free with no sign-up, no watermark and no account-based quota. Your browser, device memory and the bench's stated file limits still determine how much it can process at once.

Does the first CSV row become JSON keys?

The converter treats the CSV header row as field names when producing JSON records, and uses object keys as columns in the reverse direction.

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