How do I convert JSON to CSV?

Paste your JSON into the converter on this page and pick CSV as the output. Conversion happens instantly in your browser — nothing is uploaded. You can also call the free API: POST /api/v1/convert with { from: "json", to: "csv", data }.

Is the JSON to CSV converter free?

Yes. The on-page JSON-to-CSV converter is free and runs locally in your browser. The developer API is also free during beta, with a per-call paid tier for bulk and large payloads.

Convert JSON to CSV

Paste your JavaScript Object Notation (JSON) and convert it to Comma-Separated Values (CSV) in one click. Runs entirely in your browser — no upload, no signup.

Input (JSON)

[
  { "id": 1, "name": "Ada Lovelace", "role": "Engineer", "active": true },
  { "id": 2, "name": "Alan Turing", "role": "Researcher", "active": false }
]

Output (CSV)

Convert this via the API (curl)

curl -X POST "https://data.wrapper-agency.com/api/v1/convert" \
  -H "Content-Type: application/json" \
  -d '{"from":"json","to":"csv","data":"[\n  { \"id\": 1, \"name\": \"Ada Lovelace\", \"role\": \"Engineer\", \"active\": true },\n  { \"id\": 2, \"name\": \"Alan Turing\", \"role\": \"Researcher\", \"active\": false }\n]"}'

Free conversion API — no key during beta. POST { from, to, data }, get back the converted string. All conversion runs server-side; nothing is stored.

JSON vs CSV

JSON

A lightweight, human-readable data-interchange format. The default for web APIs and config.

CSV

A flat, tabular text format. The lingua franca of spreadsheets, exports, and data dumps.

How to convert JSON to CSV

FormatForge parses your JSON into an in-memory data structure, then serializes it as CSV. Numbers, booleans, and null values are preserved, and delimited output is quoted per RFC 4180 so embedded commas, tabs, and newlines stay intact.

Example

JSON in

[
  { "id": 1, "name": "Ada Lovelace", "role": "Engineer", "active": true },
  { "id": 2, "name": "Alan Turing", "role": "Researcher", "active": false }
]

CSV out

id,name,role,active
1,Ada Lovelace,Engineer,true
2,Alan Turing,Researcher,false

Convert JSON to CSV in code

Send the conversion to the free API and get the result back as a string:

curl -X POST "https://data.wrapper-agency.com/api/v1/convert" \
  -H "Content-Type: application/json" \
  -d '{"from":"json","to":"csv","data":"...your JSON as a string..."}'

Full reference: the conversion API. For bulk or very large payloads, see the paid bulk endpoint.

FAQ

Does converting JSON to CSV change my data?: No — the conversion is structural. Your values are preserved; only the serialization format changes.
Is my data uploaded anywhere?: The on-page converter runs locally in your browser. The API processes your payload server-side and stores nothing.

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