JSON to CSV Converter

Transform JSON arrays into CSV format instantly with automatic column detection and flexible export options.

100% Secure. Processed locally.
Click or drag JSON files here, or paste text below
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How to use JSON to CSV Converter

1

Input JSON Data

Paste your JSON array, upload JSON files, or click "Load Sample" to try with example data. Supports multiple file uploads for batch processing.

2

Configure Options

Choose your preferred delimiter (comma, semicolon, tab, or pipe) and decide whether to include column headers in the output.

3

Convert & Download

Click "Convert to CSV" to transform your data. Copy the result to clipboard or download individual files or all at once.

Powerful Features

Batch Processing

Upload and convert multiple JSON files at once. Process hundreds of files in seconds with individual download options.

100% Privacy

All conversions happen locally in your browser. No data is uploaded to any server, ensuring complete privacy and security.

Smart Column Detection

Automatically detects all columns from your JSON data, handles nested objects, and flattens arrays for perfect CSV output.

Custom Delimiters

Choose from comma, semicolon, tab, or pipe delimiters to match your specific requirements or regional CSV formats.

Perfect For

📊

Data Analysis

Convert API responses to CSV for Excel, Google Sheets, or data analysis tools.

🔄

Data Migration

Export JSON databases to CSV format for importing into other systems.

📈

Report Generation

Create CSV reports from JSON logs for business intelligence and reporting.

Frequently Asked Questions

What JSON format is supported?
The tool accepts JSON arrays of objects (e.g., [{...}, {...}]). Each object in the array becomes a row in the CSV, and the object keys become column headers. Nested objects are automatically flattened.
How are nested objects handled?
Nested objects are flattened using dot notation. For example, {"user": {"name": "John"}} becomes a column named "user.name". Arrays are converted to JSON strings to preserve data integrity.
Can I convert multiple files at once?
Yes! Upload multiple JSON files by selecting them together or dragging them into the drop zone. Each file will be converted separately, and you can download them individually or all at once.
Which delimiter should I choose?
Comma (,) is the standard and works with most spreadsheet applications. Use semicolon (;) for European Excel versions. Tab is great for text editors, and pipe (|) helps when your data contains commas.
Is my data safe?
Absolutely! All conversions happen entirely in your browser using JavaScript. Your JSON data never leaves your device or gets sent to any server, making it safe for confidential or sensitive information.