JSON to CSV Converter
Convert a JSON array of objects into clean, spreadsheet-ready CSV.
Turn JSON Arrays into CSV
CSV is the universal language of spreadsheets and data analysis tools. This converter flattens a JSON array of objects into a CSV table, taking the union of all keys as the header row and safely escaping values that contain commas, quotes, or newlines.
How it works
- The header row is the union of all object keys
- Values with commas or quotes are wrapped in double quotes
- Nested objects and arrays are serialised as JSON strings
- An array of primitives becomes a single "value" column
Best input shape
For a clean table, provide a flat array of objects that share the same keys, e.g. [ {"id":1}, {"id":2} ]. The tool still works with irregular rows â missing keys simply become empty cells.
Opening the result
Download the CSV and open it directly in Excel, Google Sheets, Numbers, or any BI tool. Because the file follows RFC 4180 quoting rules, fields containing commas or line breaks import correctly without splitting into the wrong columns.
100% Private & Processed Locally
Every conversion on this page runs entirely inside your browser using JavaScript. Your data is never uploaded to a server, logged, or stored â making this tool safe even for sensitive payloads such as API responses, configuration files, and access tokens.
Because there is no network round-trip, conversions are instant and work even when you are offline. It is free to use with no sign-up, no rate limits, and no ads injected into your output.
Frequently Asked Questions
Common questions about the JSON to CSV Converter.