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JSON to CSV— Free & Private

Convert JSON arrays to CSV format instantly in your browser.

Processed in your browser. Nothing uploaded.

What Is JSON to CSV Conversion?

JSON to CSV conversion transforms structured JSON data (arrays of objects) into comma-separated values format that can be opened in Excel, Google Sheets, and other spreadsheet applications. This is essential for data analysis, reporting, and sharing data with non-technical stakeholders who prefer spreadsheets. Our converter runs entirely in your browser, so sensitive datasets never leave your device.

How to Use JSON to CSV

  1. Paste or upload JSON

    Paste your JSON array into the input area or upload a .json file.

  2. Configure options

    Choose delimiter (comma, semicolon, tab), whether to include headers, and how to handle nested objects.

  3. Download the CSV

    Preview the CSV output and download it as a .csv file or copy it to your clipboard.

Why Use Our JSON to CSV Converter?

Runs entirely in your browser — no data uploaded to any server
Handles nested JSON objects by flattening them into columns
Configurable delimiters: comma, semicolon, or tab
Automatic header generation from JSON keys
Preview output before downloading
Handles large datasets with thousands of records
No account or installation required

Frequently Asked Questions

How does the converter handle nested JSON objects?

Nested objects are flattened using dot notation for column names. For example, a field like {"address": {"city": "NYC"}} becomes a column named "address.city" with the value "NYC". Arrays can be joined into a single cell or expanded into separate columns.

Can I convert JSON to CSV for use in Excel?

Yes. The output is a standard CSV file that Excel, Google Sheets, LibreOffice Calc, and all major spreadsheet applications can open natively. Select comma as the delimiter for maximum compatibility.

What JSON structure is required for conversion?

The converter works best with a JSON array of objects, where each object becomes a row and each key becomes a column header. A single JSON object is converted to a single-row CSV.