JSON Input

Drag & drop a JSON file here, or click to upload

CSV Output

// CSV Output will appear here

Interactive Preview Table

The parsed fields will appear below in real-time (shows up to 10 rows):

🔄 Need to do the exact opposite? Try our CSV to JSON Converter

JSON to CSV Converter — Flatten Data Instantly

Transforming complex API responses or database exports into readable spreadsheets is a common challenge. Our JSON to CSV Converter allows data analysts, marketers, and developers to easily flatten nested JSON arrays into clean, comma-separated values (CSV) ready to be opened in Microsoft Excel or Google Sheets.

Intelligent Flattening Engine: Unlike basic converters that fail when encountering nested objects, our tool intelligently flattens deep JSON hierarchies into distinct column headers. It handles complex arrays and missing keys gracefully, ensuring that your resulting spreadsheet maintains structural integrity and aligns perfectly across all rows.

100% Secure Client-Side Execution: JSON files often contain highly sensitive customer data, financial records, or proprietary analytics. Our tool is designed with a strict zero-upload policy. All parsing and structural transformation occurs entirely within your browser's local memory. Your data never touches our servers, guaranteeing absolute confidentiality.

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Frequently Asked Questions

How does the tool handle nested JSON objects? +
The converter flattens nested JSON structures into single-level columns. Keys from nested objects are typically combined (e.g., 'address.city') to ensure no data is lost during the tabular transformation.
What happens if some JSON objects have missing keys? +
The tool scans the entire JSON array to compile a master list of all unique keys to use as CSV headers. If an object is missing a specific key, the corresponding cell in the CSV will simply be left empty.
Is my JSON data kept private during conversion? +
Yes. All data parsing, flattening, and CSV generation occurs locally in your browser. Your JSON payload is never uploaded to any external server or database.