Private by default

JSON to Safe CSV Converter

Create a portable table from object rows, primitive arrays, or a single object.

Your data stays in this browser
Input JSONJSON
UTF-8Ln 1, Col 1
ResultCSV
UTF-8
Loading…
Browser-only autosaveInputs and settings stay saved only in this browser and return after a reload. Turn on Clear saved data to keep this tool session-only.
Your data stays in this browser
InstantNo server round trips
PrivateBrowser-side processing
AuditableDocumented semantics
PortableCorrectly typed downloads
Category

JSON to CSV: How to use this tool

Convert JSON objects and arrays to UTF-8 CSV while neutralizing spreadsheet formula prefixes.

Create a portable table from object rows, primitive arrays, or a single object.

Open guide and examples

How to use this tool

  1. Paste JSON, upload a local file, or load a CORS-enabled public URL.
  2. Run Convert to CSV and verify the inferred headers before opening it in a spreadsheet.
  3. Review the result, then copy it or download it with the correct file type.

Example to try

Input JSON
[
  {
    "name": "Ada",
    "role": "admin",
    "formula": "=2+3",
    "profile": {"active": true}
  },
  {
    "name": "Lin, Jo",
    "role": "editor",
    "formula": "@SUM(A1:A2)",
    "profile": {"active": false}
  }
]
Result
name,role,formula,profile
Ada,admin,'=2+3,"{""active"":true}"
"Lin, Jo",editor,'@SUM(A1:A2),"{""active"":false}"
Learn

Frequently asked questions

Does this tool upload my JSON?

No. The transformation runs in your browser. URL import contacts only the address you explicitly enter.

What happens when the JSON is invalid?

The editor marks the likely location and keeps stale output out of the result pane.

What does JSON to CSV produce?

It emits comma-separated headers and rows; nested values are serialized as compact JSON.

What limitation applies to JSON to CSV?

CSV is flat. Empty arrays and objects produce a valid empty file, and nested values remain JSON text in one cell.