How to Convert JSON to CSV Without Code — Paste, Convert, Download

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You copied an API response. It's JSON. Your manager wants it in a spreadsheet. You don't want to write a script for a one-time export.

Here's the fastest path: JSON to CSV Converter — Free, No Code

Paste the JSON. Get the CSV. Done.

How It Works

Go to the JSON to CSV Converter
Paste your JSON array into the input box
The CSV updates instantly — no button to press
Click Download CSV to save the file

Open it in Excel, Google Sheets, or import it directly into a database.

What JSON Format Does It Accept?

The converter works with JSON arrays of objects — the most common format returned by APIs:

[
  { "name": "Alice", "email": "alice@example.com", "plan": "pro" },
  { "name": "Bob", "email": "bob@example.com", "plan": "free" },
  { "name": "Carol", "email": "carol@example.com", "plan": "pro" }
]

Output:

name,email,plan
Alice,alice@example.com,pro
Bob,bob@example.com,free
Carol,carol@example.com,pro

Keys from the first object become column headers. All rows follow.

Common Use Cases

Exporting API data to a spreadsheet
Copy the JSON response from Postman, Insomnia, or your browser's dev tools. Paste it in. Download the CSV. Share with a non-technical stakeholder in under a minute.

Moving data between tools
Many tools export data as JSON but only import CSV. The converter bridges the gap — no scripting, no reformatting by hand.

Quick data review
JSON arrays are hard to read in a text editor when there are hundreds of rows. Converting to CSV and opening in Sheets gives you filtering, sorting, and column resizing instantly.

Database seed data
Export a table as JSON from one environment, convert to CSV, import via your database tool's CSV import into another environment.

What Happens to Nested Objects?

If your JSON has nested objects, the converter flattens them into dot-notation column names:

[
  { "user": { "name": "Alice", "email": "alice@example.com" }, "plan": "pro" }
]

Output columns: user.name, user.email, plan

Nested arrays are serialised as-is in the cell value.

Is My Data Sent to a Server?

No. The conversion runs entirely in your browser using JavaScript. Your JSON is never sent to any server, never logged, and never stored. It stays on your device.

This matters if you're converting data that contains emails, API keys, user records, or other sensitive fields.

Alternatives If You Need Code

If you're doing this repeatedly or need automation, here are the code equivalents:

Python:

import json, csv

data = json.load(open('data.json'))
with open('output.csv', 'w', newline='') as f:
    writer = csv.DictWriter(f, fieldnames=data[0].keys())
    writer.writeheader()
    writer.writerows(data)

Node.js:

const data = require('./data.json');
const headers = Object.keys(data[0]);
const csv = [headers, ...data.map(r => headers.map(h => r[h]))].map(r => r.join(',')).join('\n');
require('fs').writeFileSync('output.csv', csv);