JSON to CSV Converter
Developer toolNewConvert JSON arrays to CSV and back, right in your browser.
This tool runs entirely in your browser. Your files never leave your device — nothing is uploaded.
Paste a JSON array of objects above to get CSV here.
Frequently asked questions
How does the JSON to CSV converter handle commas and quotes inside values?
It follows the RFC 4180 CSV standard, so any field containing a comma, double quote, or line break is automatically wrapped in double quotes. Embedded double quotes are escaped by doubling them (""). This keeps your data intact and openable in Excel, Google Sheets, or any CSV reader.
Is my data uploaded anywhere when I convert?
No. All conversion happens entirely in your browser using client-side JavaScript — your JSON or CSV never leaves your device and is never sent to a server. That makes it safe to convert sensitive or internal data without any privacy concerns.
What format does my JSON need to be in?
The JSON should be an array of flat objects, for example [{"name":"Ada","city":"London"}]. The converter computes the union of all keys across every object to build the header row, so objects with different fields are still handled and missing values become empty cells. Nested arrays or objects are serialized back to JSON inside the cell.