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Data Conversions

JSON to CSV Converter

Paste a JSON array (or upload a .json file) and instantly get a clean, spreadsheet-ready CSV. Nested objects are flattened with dot-notation so nothing is lost.

  • Free & unlimited
  • No signup
  • Files stay in your browser
JSON Input

How to convert JSON to CSV

  1. Paste your JSON array into the input box, or upload a .json file.
  2. Choose a delimiter and whether to flatten nested objects.
  3. Your CSV appears instantly in the output panel.
  4. Click Copy or Download to save your CSV file.

About the JSON to CSV converter

This free online json to csv converter lets you turn JSON into CSV in seconds, right inside your browser. There is nothing to install and no account to create — just paste or upload your JSON, and your CSV is generated instantly.

Unlike many online converters, QuickConvert never uploads your data to a server. Every conversion runs locally using JavaScript, so your files stay private on your own device. That makes it safe for sensitive, proprietary, or internal data that you would not want to send to a third party.

Why use QuickConvert?

  • Private by design — your JSON is processed in your browser and never leaves your computer.
  • Fast — conversions happen instantly as you type, with no waiting on a server round-trip.
  • Free & unlimited — no signup, no paywall, no file-size gimmicks.
  • Works everywhere — any modern browser on desktop, tablet or mobile.

Frequently Asked Questions

Does this work with nested JSON objects?

Yes. With "Flatten nested objects" enabled, keys like {"address":{"city":"NYC"}} become a column named address.city, so deeply nested data still maps cleanly to columns.

Is my JSON uploaded to a server?

No. The conversion runs entirely in your browser using JavaScript. Your data never leaves your device, which makes it safe for sensitive or proprietary data.

Can I open the CSV in Excel or Google Sheets?

Absolutely. The output is standard RFC-4180 CSV. Download it and open it directly in Excel, Google Sheets, Numbers or any data tool.

What if my JSON is a single object, not an array?

A single object is treated as a one-row table. For multiple rows, wrap your objects in an array: [ {…}, {…} ].

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