Is my data safe when using this JSON to CSV converter?

Yes. All conversion happens entirely in your browser using JavaScript. Your JSON data is never sent to any server — it never leaves your device. The tool works completely offline once the page is loaded.

What JSON formats does this tool support?

The tool supports any valid JSON array of objects, such as API responses, exported database records, or analytics data. Each object in the array becomes one row; all unique keys across all objects become columns. Nested objects are flattened to dot-notation headers (e.g. user.address.city).

Can I change the CSV delimiter?

Yes. You can switch between comma (,), tab (\t), semicolon (;), and pipe (|) delimiters. Tab-separated output is ideal for pasting directly into Excel or Google Sheets.

What happens if my JSON objects have different keys?

The tool scans all objects in the array and unions all unique keys into a single header row. Objects missing a key will have an empty value for that column, ensuring a consistent, complete CSV output.

How do I convert the CSV output to Excel?

Download the CSV file, then open it in Excel or Google Sheets. If you use a comma delimiter, Excel will auto-detect columns. For tab-delimited output, select 'Tab' as the delimiter in Excel's text import wizard.

Free Developer Tool

Convert JSON to CSV
Instantly

Paste any JSON array and get clean CSV output in seconds. Flatten nested objects, choose your delimiter, preview columns, and download — entirely in your browser.

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100% Private

All conversion happens in your browser. Your data never leaves your device — no server, no uploads.

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Smart Column Detection

Automatically detects all keys across every JSON object and builds complete, consistent CSV headers.

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Nested Object Flattening

Deep nested objects are flattened to dot-notation columns (e.g. address.city) so nothing is lost.

JSON Input

CSV Output

🔒 100% client-side — data never leaves your browser·✓ Handles nested objects, arrays, nulls, and unicode·✓ RFC 4180 compliant CSV output

Frequently Asked Questions

Everything you need to know about JSON to CSV Converter.

Convert JSON to CSVInstantly

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Smart Column Detection

Nested Object Flattening

Frequently Asked Questions

Convert JSON to CSV
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