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JSON to CSV Converter Online
Convert JSON arrays and nested objects to CSV or Excel format online. Flatten nested keys, customize delimiters, export spreadsheets instantly and privately.
JSON โ CSV
JSON to CSV Converter
JSON Input
CSV Output
Converted CSV will appear hereโฆ
Frequently Asked Questions
How do I convert a JSON array into a CSV file?
Paste your JSON array of objects into the editor. The converter detects all unique column headers across all objects, flattens nested objects if desired, and generates standard RFC 4180 CSV.
How are nested JSON objects and arrays handled in CSV export?
You can enable "Flatten Nested Objects" to turn { user: { name: "Alice" } } into a column named user.name, or stringify sub-arrays as JSON strings within cells.
Can I open the generated CSV in Microsoft Excel or Google Sheets?
Yes. The downloaded .csv file is 100% standard RFC 4180 compliant with UTF-8 encoding, immediately opening into Excel, Numbers, and Google Sheets.
What is the maximum file size for browser CSV conversion?
The converter handles tens of thousands of rows smoothly within client memory.