How to Use JSON to CSV
Paste JSON array into input field. JSON should be array of objects (e.g., [{name:'John', age:30}, {name:'Jane', age:25}]).
Tool extracts object keys from first object as CSV headers. All objects should have same structure for best results.
Click 'Convert' to transform JSON array to CSV. Each JSON object becomes a CSV row. Copy or download CSV result.
Common Use Cases
Convert JSON API responses to CSV format for Excel or spreadsheet analysis
Transform JSON data from web applications to CSV for data export or reporting
Convert JSON configuration files to CSV for easier editing in spreadsheets
Transform JSON survey responses or form data to CSV for analysis
Convert JSON arrays to CSV format for import into databases or data tools
Features
Convert JSON arrays to CSV format
Automatic header generation from object keys
Support for nested object flattening
Custom delimiter selection (comma, semicolon, tab)
100% free and private - no data uploaded
No registration required
100% client-side processing
Limitations & Constraints
Nested JSON objects or arrays may not convert to flat CSV correctly
Very large JSON files (>10MB) may process slowly depending on browser memory
JSON arrays with different object structures may produce inconsistent CSV
Complex nested JSON structures may lose data in CSV conversion
JSON with arrays or objects as values may not convert properly to CSV
Troubleshooting
JSON to CSV conversion fails or shows error
Solution: Check JSON is valid - verify syntax (proper brackets, commas, quotes). Format JSON first using JSON Formatter to validate and fix syntax errors. JSON should be array of objects for best CSV conversion.
Nested JSON objects not converting correctly
Solution: CSV is flat format - nested objects may be flattened or converted to strings. Complex nested structures may lose structure. Consider flattening JSON first, or use specialized conversion tools.
CSV missing some JSON properties
Solution: Verify JSON array items have consistent structure. CSV uses first object's properties as headers. Objects with missing properties will have empty CSV cells. Ensure JSON structure is consistent.
Conversion is slow with large JSON files
Solution: Very large JSON files may take time. Close other browser tabs to free memory. Consider converting smaller sections, or use JSON processing tools for very large files.
JSON arrays with different structures
Solution: CSV works best with consistent JSON structure. Objects with different properties may produce CSV with many empty cells. Normalize JSON structure first, or handle inconsistent structures manually.
Frequently Asked Questions
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