JSON to CSV Converter

Convert between JSON and CSV formats instantly. Bidirectional conversion with support for nested objects, custom delimiters, and more.

Your data is processed entirely in your browser. Nothing is uploaded to any server.

Bidirectional Conversion

Convert JSON to CSV or CSV to JSON with a single click. Switch directions instantly.

Advanced Options

Customize delimiters, handle nested objects, parse data types, and more for precise conversions.

100% Private

All processing happens in your browser. Your data never leaves your device.

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Frequently Asked Questions

How do I convert JSON to CSV?
Simply paste your JSON array into the input field and click "Convert". The tool will automatically extract all keys as column headers and convert each object in the array to a CSV row. You can then copy the result or download it as a .csv file.
Can I convert CSV back to JSON?
Yes! Click the "CSV → JSON" tab to switch directions. Paste your CSV data, and the tool will convert it to a JSON array of objects, using the first row as property names (if the "First Row is Header" option is enabled).
How does the tool handle nested JSON objects?
When the "Flatten Nested Objects" option is enabled, nested objects are flattened using dot notation. For example, {"address": {"city": "New York"}} becomes a column named "address.city" with the value "New York".
What delimiters are supported?
We support multiple delimiters: comma (,), semicolon (;), tab, and pipe (|). For CSV to JSON conversion, you can also use auto-detect to automatically identify the delimiter used in your data.
Is my data secure?
Absolutely. All conversion happens locally in your browser using JavaScript. Your data is never uploaded to any server. This means even sensitive data can be safely converted without privacy concerns.