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JSON to CSV Converter

Convert JSON to CSV online for free. Instant browser-based conversion with customizable options. 100% private — no uploads to any server.

Paste your JSON data below

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What Is a JSON to CSV Converter?

A JSON to CSV converter transforms JSON (JavaScript Object Notation) data into CSV (Comma-Separated Values) format. JSON is ideal for web APIs and nested data structures, while CSV is perfect for spreadsheets, data analysis, and database imports.

Converting JSON to CSV online free is essential when you need to move data from web applications to spreadsheet programs like Excel, Google Sheets, or data analysis tools.

How to Convert JSON to CSV

  1. Paste your JSON data (array of objects or single object) into the input area
  2. Configure options (include header, compact output) as needed
  3. Click "Convert to CSV" to transform your JSON data
  4. Copy the result or download it as a CSV file

Features

⚡ Instant ConversionConvert JSON to CSV instantly with a single click.
🔒 100% PrivateAll processing happens in your browser. Your data never leaves your device.
📊 Customizable OutputChoose whether to include headers and control output formatting.
🆓 Completely FreeNo signups, no credit cards, no usage limits.

Frequently Asked Questions

What JSON formats are supported?
Our converter supports JSON arrays of objects (most common), single JSON objects, and JSON lines format. Each object in the array becomes a row in the CSV, with object keys becoming column headers.
What happens with nested objects or arrays?
Nested objects are flattened using dot notation (e.g., "address.city"). Arrays are joined with commas or converted to JSON strings, depending on complexity. For complex nested data, consider flattening your JSON first.
Do I need to install anything?
No installation required. Our JSON to CSV converter online free runs entirely in your browser. Just open the page, paste your JSON, and get CSV instantly.
Is my data safe?
Absolutely. Your JSON data never leaves your browser — there are no server uploads, no logs, no tracking. This is a fully client-side tool.

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Tooly — Free Online JSON to CSV Converter. No signup. No uploads. 100% free.

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