JSON ↔ CSV Converter

Convert between JSON and CSV formats instantly. Paste your data or drop a file — everything is processed on your device.

Your data is never sent to our servers

Paste JSON here

Result

Frequently asked questions

Can I convert CSV to JSON?

Yes. The tool supports bidirectional conversion: JSON to CSV and CSV to JSON. Just paste or upload your data and select the direction.

What if my JSON is nested?

The tool flattens nested JSON objects using dot notation (e.g., user.name) so they fit into CSV columns. Arrays are converted to comma-separated strings.

Is my data uploaded to a server?

No. All conversion happens locally in your browser. Your sensitive data never leaves your device.

What delimiter does the CSV use?

The output CSV uses commas by default and wraps values in quotes when necessary. It is compatible with Excel, Google Sheets, and all major spreadsheet software.

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Read our detailed guide about this tool

When do you need JSON ↔ CSV conversion?

JSON and CSV are the two most common data formats in modern workflows, but they serve different purposes. JSON is the native language of APIs, web applications, and NoSQL databases — it handles nested structures, arrays, and complex relationships. CSV is the universal format for spreadsheets, Excel, Google Sheets, and legacy business systems — it is flat, simple, and human-readable. You need JSON to CSV when exporting API data for analysis in Excel, migrating database exports for non-technical stakeholders, or preparing data for email marketing tools. You need CSV to JSON when importing spreadsheet data into a web app, feeding structured data to an API, or converting survey results for a developer team. Our converter handles both directions instantly, flattening nested JSON objects with dot notation and preserving data types. The entire conversion happens in your browser — no upload, no server, no data exposure. Perfect for handling sensitive customer data, financial records, or proprietary business information.