DUL Data Utility Labs

JSON and CSV - Private browser tool

JSON to CSV Converter

Convert JSON arrays or nested objects to CSV in your browser. No upload, no signup, and easy to copy or download.

Use the tool Read FAQ 
[
  {"id":1,"name":"Ada Lovelace","team":"Data","active":true},
  {"id":2,"name":"Grace Hopper","team":"Platform","active":false}
]

JSON to CSV Converter

Private, browser-based, free to use.

What this tool helps you do

Convert JSON arrays or nested objects to CSV in your browser. No upload, no signup, and easy to copy or download. Paste your data, run the tool, copy the result, and move on. The core workflow stays on one focused page.

Best use cases

  • Convert or clean data before importing it into spreadsheets, BI tools, databases, or internal apps.
  • Debug API payloads, logs, tokens, encodings, regular expressions, and text transformations.
  • Create lightweight examples for documentation, tests, tutorials, customer support, and team handoffs.

Related tools

CSV to JSON ConverterJSON FlattenerCSV CleanerCSV to SQL GeneratorCSV to JSON ConverterJSON FlattenerJSON FormatterJSON Schema Generator

JSON to CSV Converter FAQ

Is this JSON to CSV converter private?

Yes. The conversion runs in your browser and does not upload your data.

Can it handle nested JSON?

Yes. Nested objects are flattened into dot notation columns.

What JSON shape works best?

An array of objects is best. A single object is converted as one row.