JSON to CSV Converter Online 2026 - Fast, Secure & Private
Convert JSON arrays to CSV format for spreadsheets and data analysis. 100% client-side privacy. Free online tool.
Key Features
- ✅ Auto-flattening
- ✅ Custom delimiters
- ✅ Header generation
- ✅ Large array support
- ✅ Data type preservation
How to Use
- Paste your JSON array (objects must have consistent properties)
- Configure delimiter preference (comma, semicolon, tab, etc)
- Click Convert to generate CSV
- Preview the CSV output
- Review column headers from property names
- Adjust delimiter if needed and re-convert
- Download or copy the CSV
- Open in Excel, Google Sheets, or data analysis tools
Expert FAQ
- How does JSON array conversion work?
Each JSON object in the array becomes a CSV row. Object properties become column headers. Perfect for exporting data to Excel or Google Sheets. - What about nested JSON objects?
Simple nested objects are flattened with dot notation (parent.child). Complex structures are serialized as JSON strings in cells. - Can I customize the delimiter?
Yes, choose comma (standard), semicolon, tab, or pipe delimiters based on your spreadsheet application requirements.
Technical Details
JSON to CSV conversion is essential for data analysis and reporting: 1. Array-to-rows mapping 2. Property-to-column mapping 3. Delimiter customization 4. Header row generation 5. Type preservation 6. Proper escaping for special characters Critical for exporting API data, database results, and application data for analysis in spreadsheet applications. To ensure the output is clean, use our CSV Formatter or check for structural issues with the CSV Validator.