JSON to CSV
Instantly convert your JSON data into a clean, downloadable CSV or Excel file. 100% client-side, fast, and private.
About What is a JSON to CSV Converter?
A JSON to CSV Converter transforms data from JSON (JavaScript Object Notation) format into CSV (Comma-Separated Values) files for use in spreadsheet applications like Microsoft Excel, Google Sheets, or databases. It parses JSON arrays and objects, extracts unique keys as CSV headers, and converts each object into a properly formatted CSV row.
This tool operates with complete privacy using client-side JavaScript. Your JSON data never leaves your device or gets uploaded to any server. It supports large files (up to browser memory limits), handles special characters with proper escaping, and generates RFC 4180 compliant CSV with UTF-8 encoding.
Key Features of JSON to CSV Converter
Everything you need for professional json to csv converter
Instant Conversion
Paste JSON and get CSV in milliseconds. No waiting or uploads required.
Excel Compatible
Generated CSV works perfectly with Excel, Google Sheets, and Numbers.
100% Private
All processing happens in your browser. Data never leaves your device.
Smart Headers
Automatically detects all unique keys to create complete CSV headers.
Copy & Download
Copy CSV to clipboard or download as a file with custom filename.
Fully Responsive
Works great on desktops, tablets, and smartphones.
How to Use JSON to CSV Converter
Follow these simple steps to get started
Paste JSON
Copy JSON data from API, file, or database and paste into the input area.
Convert
Click Convert to transform JSON objects into CSV rows with headers.
Download
Download the CSV file or copy to clipboard for use in spreadsheets.
Pro Tips
- For best results, use flat JSON arrays of objects with simple key-value pairs.
- Nested objects are stringified - flatten complex JSON first for cleaner CSV output.
- Files under 10MB work best for browser performance.
- Check JSON syntax if you get parsing errors - common issues are missing quotes or commas.
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Frequently Asked Questions
Everything you need to know about JSON to CSV Converter
What is a JSON to CSV Converter?
A JSON to CSV Converter transforms data from JSON format into CSV files for use in Excel, Google Sheets, or databases. It parses JSON arrays, extracts unique keys as headers, and converts each object into a CSV row.
How does it handle nested JSON?
The converter is optimized for flat JSON. Nested objects or arrays are stringified. For complex nested structures, consider flattening your data first.
Can I convert large JSON files?
Yes, depending on your browser memory. Files under 10MB work best. For very large files (50MB+), consider splitting them into smaller chunks.
Is the CSV compatible with Excel?
Yes! Generated CSV files work with Microsoft Excel, Google Sheets, Apple Numbers, and other spreadsheet applications with proper escaping for special characters.
What encoding does it use?
The tool generates UTF-8 encoded CSV following RFC 4180 standards with comma delimiters and proper escaping.
Is my data safe?
Absolutely. All conversion happens in your browser using client-side JavaScript. Your data is never uploaded to any server.
Can I use this commercially?
Yes, this tool is completely free for personal and commercial use with no restrictions, limits, or registration required.
How do I fix JSON parsing errors?
Check for missing/extra commas, unquoted property names (JSON requires double quotes), single quotes instead of double quotes, trailing commas, or unclosed brackets.
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