JSON ↔ CSV Converter
Convert between JSON and CSV formats instantly. Perfect for developers and data analysts who need to transform data between these formats. No sign-up required.
Upload JSON File
Drag & drop your JSON file here or click to browse
Bidirectional Conversion
Convert both ways - JSON to CSV and CSV to JSON. Perfect for working with APIs, spreadsheets, and databases.
Privacy First
Your data never leaves your browser. We don't store or send your files to any servers - conversion happens locally.
Advanced Options
Handles complex structures, nested objects, arrays, and special characters. Supports both array and object formats.
JSON ↔ CSV Converter
Convert between JSON and CSV formats instantly. Perfect for developers working with APIs, Excel spreadsheets, and databases. No sign-up required - completely free!
How to Use This Converter
Converting JSON to CSV
- Select the "JSON to CSV" conversion mode
- Paste your JSON data or upload a JSON file
- Click "Convert to CSV"
- Preview your data in table format
- Download the CSV file or copy to clipboard
Tip: Works with complex nested JSON structures - they'll be flattened with dot notation (e.g., "user.address.city").
Converting CSV to JSON
- Select the "CSV to JSON" conversion mode
- Paste your CSV data or upload a CSV file
- Click "Convert to JSON"
- Preview your formatted JSON output
- Download the JSON file or copy to clipboard
Tip: Supports CSV files with headers - they'll become property names in the JSON output.
Common Use Cases
- Convert API responses to Excel-friendly format
- Transform spreadsheet data for web applications
- Prepare data for databases or analytics tools
- Create sample data for development and testing
- Migrate data between different systems
Helpful Resources
- MDN JSON Documentation - Learn about JSON format
- CSV Format Specification (RFC 4180) - Official CSV standard
- W3Schools JSON Tutorial - Introduction to JSON
- Working with CSV in Node.js - FreeCodeCamp guide
- JSON Examples - See different JSON structures
Frequently Asked Questions
Q: Is my data secure when using this converter?
A: Absolutely! All conversion happens in your browser - we never send your data to any servers.
Q: What's the maximum file size I can convert?
A: There's no strict limit, but very large files may slow down your browser. For files over 10MB, consider using a dedicated application.
Q: Can I convert nested JSON structures?
A: Yes! Nested objects will be flattened using dot notation (e.g., "user.address.city"). Arrays will be converted to comma-separated strings.