devwrench— browser-based developer tools
←Back to tools
›devwrench --run json-to-csv

Free JSON to CSV Converter
for developers.

Convert JSON to CSV instantly with this free online JSON to CSV converter. Paste a JSON object or an array of objects and get clean CSV output in real time.

Paste your JSON

Generated CSV

name,email,city
Karlo,karlo@example.com,Montreal
Sophie Tremblay,sophie@example.com,"Montreal, QC"

Supported

  • Single JSON objects
  • Arrays of JSON objects
  • Automatic CSV header generation
  • Quoted CSV fields when needed
  • Live JSON to CSV conversion

Automatically handled

  • Missing keys are converted to empty CSV fields
  • Nested objects and arrays are stringified
  • CSV values containing commas or quotes are escaped automatically
  • Headers are merged across all rows

Not supported yet

  • Custom CSV delimiters
  • Flattening deeply nested JSON into dotted keys
  • Column reordering and manual field selection

Free online JSON to CSV converter

This tool converts JSON into formatted CSV instantly in your browser. It works with single JSON objects and arrays of objects, making it useful for API responses, test data, exports, and spreadsheet workflows.

Developers often need to convert JSON to CSV when preparing reports, exporting API data, debugging payloads, or moving structured data into spreadsheets. This tool handles the common cases quickly and locally.

The conversion runs entirely in your browser. Your JSON is not uploaded, stored, or sent anywhere.

Example

[
  {
    "name": "Sophie Tremblay",
    "email": "sophie@example.com",
    "city": "Montreal, QC"
  }
]

Paste this JSON into the converter above to instantly generate the equivalent CSV output.

Convert JSON to CSV online

Use this converter to transform JSON objects into CSV rows for spreadsheets, exports, quick reports, data cleanup, and developer workflows.

Common use cases

  • Convert API responses into CSV for Excel or Google Sheets
  • Export JSON data into a spreadsheet-friendly format
  • Transform mock JSON data into quick reports
  • Prepare structured data for CSV imports

How it works

The converter reads your JSON input, extracts all keys used across the object or array of objects, then builds CSV headers automatically.

Each JSON object becomes one CSV row. Missing fields are left empty, while nested arrays and objects are stringified so they can still be exported.

CSV escaping is handled automatically, so values containing commas, quotes, or line breaks are wrapped correctly.

FAQ

What is a JSON to CSV converter?

A JSON to CSV converter transforms structured JSON data into comma separated values so it can be opened in spreadsheets, exported, or shared more easily.

Can I convert an array of JSON objects?

Yes. This tool supports arrays of objects, which is the most common JSON to CSV use case.

What happens to nested objects?

Nested objects and arrays are preserved as JSON strings inside the CSV output. That keeps the export simple and predictable for a first pass.

Is this JSON to CSV tool safe?

Yes. The conversion happens locally in your browser and your data is not uploaded.

More developer tools

DevWrench provides a growing collection of browser-based developer tools including JSON utilities, converters, encoders, and debugging helpers.