JSON to CSV Converter — Convert JSON Array to Spreadsheet
Transform API responses, MongoDB exports, and JSON arrays into tabular CSV format in seconds. Export data effortlessly for analysis in Microsoft Excel, Google Sheets, or business intelligence tools.
How JSON to CSV conversion works
JSON structures store records as objects inside arrays. This tool aggregates every unique property key found across all objects in your dataset to formulate the header columns. It then maps each object's values to the corresponding columns, escaping quotes and commas automatically.
Key capabilities
- Automatic key discovery: Even if some objects lack certain keys, all columns are accounted for.
- RFC 4180 compliance: Fields containing commas, newlines, or double quotes are wrapped and escaped cleanly.
- High-volume ready: Process arrays containing thousands of items in your local browser without timeouts.
Frequently asked questions
How do I convert a JSON array to CSV online?
Paste your JSON array of objects into the editor on the left. The tool automatically detects all keys across objects, generates a header row, and formats each record into standard comma-separated values (CSV).
Can I open the resulting CSV in Microsoft Excel or Google Sheets?
Yes. The output strictly adheres to RFC 4180 CSV specifications with properly escaped commas and quotes, making it fully compatible with Microsoft Excel, Google Sheets, LibreOffice Calc, and data science libraries.
Is my data uploaded to any remote server?
No. The conversion runs 100% locally in your browser. No data leaves your machine, making it safe for customer records, export dumps, and financial figures.
Scroll back up and paste your JSON array to generate your CSV export.