JSON to CSV Converter

Transform JSON data into CSV format with support for nested objects, custom delimiters, and Excel compatibility. Convert your data instantly and download results.

100% Private & Secure: All JSON to CSV conversion happens in your browser. Your data never leaves your device and is never sent to any server.

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💡 Tip: Accepts JSON objects or arrays. Nested objects are flattened with dot notation.

Max file size: 5MB (Free)

Free Features

  • • Convert JSON arrays to CSV
  • • Flatten nested objects (3 levels)
  • • Custom delimiters (comma, semicolon, tab)
  • • Header row toggle
  • • Files up to 5MB
  • • Copy & download output

Premium Features

  • • Unlimited file size support
  • • Advanced nested flattening (unlimited depth)
  • • Multiple sheet output
  • • Custom column ordering
  • • Batch file processing
  • • Priority support

Professional JSON to CSV Conversion

The JSON to CSV Converter transforms JSON (JavaScript Object Notation) data into CSV (Comma-Separated Values) format, making it compatible with spreadsheet applications like Excel, Google Sheets, and data analysis tools. This free online converter handles both simple and complex JSON structures, providing flexible options for delimiter selection, header management, and nested data flattening.

Why Convert JSON to CSV?

Spreadsheet Compatibility

CSV files open directly in Excel, Google Sheets, Numbers, and other spreadsheet applications. Convert JSON data for easy viewing, editing, and analysis in familiar tools.

Data Analysis

Many data analysis tools, statistical software, and business intelligence platforms import CSV more readily than JSON. Converting enables integration with tools like Tableau, Power BI, and R.

Database Import

Most databases provide CSV import functionality. Convert JSON API responses or exports to CSV for bulk data imports into MySQL, PostgreSQL, SQL Server, and other databases.

Simplified Structure

CSV's tabular format makes data easier to understand at a glance. Convert complex JSON to rows and columns for better readability and simpler data sharing.

Key Features

  • Flat JSON Support: Converts simple JSON objects and arrays directly to CSV with automatic header detection.
  • Nested JSON Flattening: Intelligently flattens nested objects and arrays using dot notation (e.g., user.address.city).
  • Custom Delimiters: Choose between comma, semicolon, or tab delimiters to match your regional settings or application requirements.
  • Header Control: Toggle header row inclusion to meet specific import requirements or data format preferences.
  • Array Handling: Processes JSON arrays intelligently, creating rows for each array element or joining array values as needed.
  • Live Preview: See conversion results instantly before downloading, ensuring output matches expectations.
  • Excel Compatibility: Generates CSV files that open correctly in Microsoft Excel with proper encoding and formatting.
  • Quick Copy: Copy CSV output to clipboard for immediate pasting into spreadsheets or other applications.
  • File Download: Download converted data as a .csv file ready for use in any CSV-compatible application.

Common Use Cases

API Response Processing: Convert JSON responses from REST APIs into CSV for analysis in Excel or import into databases. Perfect for extracting data from web services.

Data Migration: Transform JSON exports from NoSQL databases like MongoDB into CSV for importing to relational databases or data warehouses.

Report Generation: Convert application data stored in JSON format to CSV for creating reports, charts, and business intelligence dashboards.

Data Sharing: Export JSON data to CSV for sharing with colleagues who prefer spreadsheet formats or don't have tools to view JSON.

Backup Processing: Convert JSON backup files to CSV for long-term archival in a more universally readable format.

How to Use the JSON to CSV Converter

  1. 1.Paste your JSON data into the input area. The tool accepts both JSON objects and arrays of objects.
  2. 2.Configure conversion options: select delimiter type, toggle headers, and choose column ordering preferences.
  3. 3.Click "Convert to CSV" to transform your JSON. The preview shows results immediately.
  4. 4.Review the CSV output and download the file or copy to clipboard for use in your application.

Understanding Nested JSON Flattening

Dot Notation: Nested objects are flattened using dots to represent hierarchy. For example, a JSON structure like {"user": {"name": "John"}}} becomes a column named user.name with value "John".

Array Handling: Arrays create multiple rows when they contain objects, or join values with pipes (|) when they contain primitives. This ensures all data is preserved in the CSV output.

Complex Structures: For deeply nested JSON with multiple levels, the free version flattens up to 3 levels deep. Premium users get unlimited nesting support and advanced flattening algorithms.

Delimiter Options Explained

Comma (,) - Standard CSV

Default CSV format used in most English-speaking countries. Compatible with Excel (US/UK), Google Sheets, and most data analysis tools. Best for general use.

Semicolon (;) - European CSV

Common in European countries where comma is used as decimal separator. Excel in Europe often expects semicolon-delimited files. Use for regional compatibility.

Tab (\t) - TSV Format

Tab-separated values work well when data contains commas and semicolons. Excellent for pasting directly into spreadsheets while preserving data integrity.

Advanced Features (Premium)

Premium users get access to advanced capabilities for handling large-scale and complex JSON to CSV conversions:

  • Large File Support: Convert JSON files up to 50MB (free tier limited to 5MB).
  • Advanced Nested Flattening: Unlimited nesting depth with smart array handling strategies.
  • Multiple Sheet Output: Split complex JSON into multiple CSV files or Excel sheets.
  • Custom Column Ordering: Reorder, hide, and customize column output.
  • Batch Processing: Convert multiple JSON files simultaneously.

Tips for Best Results

  • Validate JSON First: Use our JSON Validator to ensure your JSON is properly formatted before conversion to avoid errors.
  • Choose Right Delimiter: Match delimiter to your region and target application for seamless imports.
  • Include Headers: Keep headers enabled for self-documenting CSV files that are easier to understand and use.
  • Test with Sample: Convert small samples first to verify output format before processing large datasets.

Privacy and Security

All JSON to CSV conversion happens entirely in your browser using JavaScript. Your data never leaves your device, never touches our servers, and is never stored or logged anywhere. This ensures complete privacy and security for sensitive business data, personal information, or proprietary datasets.

Frequently Asked Questions

What JSON structures are supported?

The converter supports JSON objects, arrays of objects, and nested structures. Each object in an array becomes a row, and nested objects are flattened using dot notation.

How does the tool handle arrays within objects?

Arrays of primitive values (strings, numbers) are joined with pipe (|) separators. Arrays of objects create multiple rows. Premium users can customize this behavior.

Will my CSV open correctly in Excel?

Yes. The tool generates Excel-compatible CSV files with proper encoding. Choose comma delimiter for US/UK Excel or semicolon for European Excel versions.

What's the file size limit?

Free users can convert JSON files up to 5MB. This handles most common use cases. Premium users get unlimited file size support for large datasets.

Can I convert CSV back to JSON?

Yes! Use our CSV to JSON converter tool for the reverse operation. It intelligently reconstructs nested objects from flattened column names.