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Step 1
Paste your valid JSON array into the input area.
JSON to CSV Online
Use NewTools to convert JSON to CSV directly in your browser. Converts a JSON object or array of objects into escaped CSV for spreadsheets.
Fast JSON to CSV. Easily map flat JSON object arrays to CSV formatting without server uploads.
No installation
Fast processing
Browser friendly
Privacy-aware
Features
Convert JSON arrays and objects into standard comma-separated CSV spreadsheets
Automatic key extraction to create clean, aligned CSV column headers
Proper escaping for commas, quotes, and multiline text values in fields
100% private in-browser processing — your data never leaves your computer
Instant clipboard copy and direct .csv file download ready for Excel and Sheets
Free to use with no account, file limits, or software installation required
How It Works
2
Step 2
Click the Convert to CSV button.
3
Step 3
Download the resulting .csv file or copy the output.
Common Use Cases
REST API Data Export & Analysis
Transform raw JSON responses from web APIs into CSV spreadsheets for calculations in Microsoft Excel, Google Sheets, or Apple Numbers.
Application Telemetry & Server Logs
Convert JSON application event logs and metrics into structured tabular data for reporting and performance auditing.
Database Migration & SQL Imports
Flatten document-based JSON records into clean CSV files for easy import into relational SQL databases.
Tips & Best Practices
Tip 1
Ensure your JSON is formatted as an array of objects: [{"key":"value"}].
Tip 2
If your JSON is invalid, the tool will report a parse error. Use a JSON validator first if needed.
JSON to CSV
Browser-Native Utility
By utilizing native JSON parsing inside your browser, this tool ensures sensitive data remains secure on your device.
Frequently Asked Questions
Can this tool flatten deeply nested JSON?
No. This tool is designed for flat JSON structures (an array of simple objects). Deeply nested arrays or complex relational objects will not be flattened perfectly and may render as stringified JSON.
Is my data uploaded to a server?
No. The conversion executes entirely in your browser using JavaScript. No data is transmitted.
What happens if keys are missing in some objects?
The tool will leave the corresponding CSV column empty for that row.