Free JSON ↔ CSV Converter
Free utility to convert JSON to CSV or CSV to JSON instantly. Auto-detects delimiters and provides live table previews.
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How to use it
Paste Your Data
Choose your conversion mode and paste your JSON or CSV string directly into the input text field.
Review the Live Preview
Check the live table preview generated below the input to ensure your data structure was interpreted correctly.
Copy or Download Result
Once satisfied, copy the formatted result to your clipboard or download it instantly as a .json or .csv file.
FAQ
?Can I convert complex, deeply nested JSON into CSV?
Yes, our free tool automatically flattens complex nested JSON structures, transforming them into a linear format that is perfectly compatible with CSV files.
?Is there a limit on the file size I can convert?
The limit is solely based on your browser's available memory. Since there are no server uploads, it comfortably handles datasets up to several megabytes instantaneously.
?Is my proprietary data kept private?
Absolutely. The entire parsing and conversion logic runs entirely on your local device. We do not store, track, or transmit any of your data.
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Your data never leaves your browser
Easily switch between JSON and CSV data formats with our free converter. Whether you're moving data from a modern database like Supabase to an Excel spreadsheet, or importing raw CSV data into your application, our tool handles deeply nested objects and large datasets seamlessly in your browser.