Updated June 2026 · runs 100% in your browser
JSON to CSV
Convert a JSON array into CSV. Paste, convert, copy or download — on your device, no upload.
🔒 Processed on your device · 0 bytes uploaded
How it works
Paste a JSON array of objects and press Convert to get CSV you can copy or download.
It all runs in your browser with JavaScript, so your data never leaves your device. It stays free, unlimited and private, and works offline once loaded.
About JSON to CSV
An array of JSON objects maps neatly to CSV rows, with the object keys becoming the column headers. Great for opening API data in a spreadsheet.
Frequently asked questions
How do I use JSON to CSV?
Paste a JSON array of objects and press Convert to get CSV you can copy or download.
What shape of JSON works?
An array of flat objects works best — each object becomes a row and its keys become columns.
Is my data uploaded?
No. Everything is parsed and converted in your browser with JavaScript — your data is never sent to a server.
What is a JSON file?
JSON (JavaScript Object Notation) is a lightweight, human-readable text format for structured data. It's the standard for web APIs and config files because both people and programs read it easily.
What is a CSV file?
CSV (Comma-Separated Values) is a simple text format for tabular data: each line is a row and commas separate columns. Nearly every spreadsheet and database can read and write it.