Convert Large Nested JSON to CSV

Convert JSON to CSV format instantly in your browser. Supports nested objects, multiple delimiters, and table preview. 100% free, no server upload required.

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What is a JSON to CSV Converter?

A JSON to CSV converter transforms structured JSON (JavaScript Object Notation) data into comma-separated values (CSV) format, making it easier to import into spreadsheets like Microsoft Excel, Google Sheets, or database applications. This is particularly useful for developers working with API responses, database exports, configuration files, or any structured data that needs to be analyzed in spreadsheet software.

How to Convert JSON to CSV

  1. Paste your JSON data into the input field or load sample data
  2. Configure your preferences: delimiter (comma, semicolon, tab, pipe), quote character, and nested object handling
  3. Click "Convert" to transform your JSON into CSV format
  4. Preview your data in the table view to verify the conversion
  5. Download or copy the CSV file to use in your applications

Key Features

  • 100% Client-Side Processing: Your data never leaves your browser, ensuring complete privacy and security
  • Nested Object Support: Automatically flattens complex JSON structures using dot notation
  • Multiple Delimiters: Choose from comma, semicolon, tab, or pipe separators
  • Table Preview: Visualize your converted data before downloading
  • Bidirectional Conversion: Convert both JSON to CSV and CSV to JSON
  • Instant Results: No server upload or processing delays
  • Free & Unlimited: No registration, no usage limits, completely free

Common Use Cases

  • Export API response data to Excel for analysis
  • Convert database query results to CSV format
  • Transform configuration files for import into other systems
  • Prepare data for machine learning or data science projects
  • Create reports from JSON-based data sources

Frequently Asked Questions

How do I convert JSON to CSV with nested objects?
Our JSON to CSV converter automatically flattens nested objects using dot notation (e.g., user.address.city). Enable the "Flatten Nested Objects" option in settings to handle complex JSON structures.
Is this JSON to CSV converter free to use?
Yes, this tool is 100% free with no registration required. All processing happens in your browser, and there are no limits on the number of conversions.
Can I convert large JSON files to CSV?
Yes, but performance depends on your device. For files over 10MB, consider splitting them into smaller chunks. The tool processes everything client-side, so your browser's memory is the main limitation.
Is my data secure when using this converter?
Absolutely. All processing happens entirely in your browser. Your JSON data never leaves your device or gets sent to any server, ensuring complete privacy and security.
Can I convert CSV back to JSON?
Yes! Select the "CSV to JSON" mode to convert CSV data back to JSON format. The tool supports multiple delimiters including comma, semicolon, tab, and pipe.