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Convert JSON array data to CSV format with download support.
CSV output will appear here
A JSON to CSV converter transforms structured JSON data into flat, tabular CSV (Comma-Separated Values) format that can be opened in any spreadsheet application. This conversion is essential when you need to analyze API responses in Excel, create reports from JSON data exports, share structured data with stakeholders who use spreadsheets, or import JSON data into tools that only accept CSV format. While JSON is the dominant format for web APIs and modern applications, CSV remains the standard for data analysis, reporting, and spreadsheet-based workflows.
Our free online JSON to CSV converter at Jayax.dev handles flat and nested JSON structures, automatically flattens objects using dot notation, and produces clean, RFC-compliant CSV output. The entire conversion runs in your browser with zero data transmission, making it safe for converting sensitive API responses and data exports.
Converting your JSON data to CSV format is quick and straightforward. Follow these steps:
Converting JSON to CSV is a frequent task across data analysis, reporting, and business operations.
Our JSON to spreadsheet converter is designed for accuracy and ease of use with features that handle real-world JSON data.
JSON supports hierarchical data structures with nested objects and arrays, but CSV is inherently flat. Our converter handles this by flattening nested objects using dot notation — a nested object like "address": "city": "NYC", "zip": "10001" becomes two CSV columns: address.city and address.zip. Arrays within objects are converted to their JSON string representation. This approach preserves all data while producing a flat table that spreadsheet applications can handle. For deeply nested data, the flattening creates more columns but maintains complete data fidelity.
For the best conversion results, ensure your JSON is an array of objects with consistent keys across all entries. Objects with missing keys will have empty cells in the corresponding CSV columns. Before converting large datasets, test with a small sample to verify the output structure meets your needs. If your JSON has deeply nested structures, consider whether flattening produces too many columns for practical spreadsheet use — sometimes restructuring the JSON before conversion yields a more usable CSV output.
CSV format is ideal for opening data in spreadsheet applications like Excel, Google Sheets, or Apple Numbers. Converting JSON to CSV allows you to analyze API responses in spreadsheets, create reports from JSON data, import JSON data into database tools that accept CSV, and share data with non-technical stakeholders who work with spreadsheets.
The converter works best with JSON arrays of flat objects, where each object has the same keys. For example, an array of user objects with name, email, and age fields converts cleanly to a CSV table. Nested objects are flattened using dot notation (e.g., "address.city"), and arrays are converted to string representations.
Paste your JSON array into the input field and click Convert. The tool parses the JSON, extracts all unique keys as column headers, and generates a CSV table where each JSON object becomes a row. You can then copy the CSV output or download it as a .csv file.
Yes, nested JSON objects are flattened using dot notation. For example, if your JSON contains an "address" object with "city" and "country" fields, the CSV will have columns named "address.city" and "address.country". This preserves the nested data while keeping the CSV format flat and compatible with spreadsheet applications.
JSON arrays within objects are converted to string representations in the CSV output. For example, a tags array containing "javascript" and "web" becomes a string representation in the CSV cell. This preserves the data while maintaining CSV compatibility.
Yes, the CSV output is fully compatible with Microsoft Excel, Google Sheets, Apple Numbers, LibreOffice Calc, and all other spreadsheet applications. Download the .csv file and open it directly in your preferred spreadsheet software. The data will be properly organized into columns and rows.
By default, the converter uses commas as the delimiter, which is the standard CSV format. You can also choose semicolons or tabs as alternative delimiters if your locale or target application requires a different separator.
JSON null values and missing keys are represented as empty cells in the CSV output. This is the standard behavior for CSV format and ensures compatibility with spreadsheet applications that handle empty cells correctly in formulas and data analysis.
Yes, all conversion happens entirely in your browser. No data is sent to any server, API, or third party. Your JSON data remains on your device throughout the conversion process, making it safe for converting sensitive data including API responses with user information, database exports, and proprietary datasets.
JSON supports hierarchical data with nested objects and arrays, multiple data types (strings, numbers, booleans, null), and is the standard format for web APIs. CSV is a flat tabular format that stores data in rows and columns, ideal for spreadsheets and simple data exchange. JSON is better for complex data structures and APIs, while CSV is better for tabular analysis and spreadsheet compatibility.
