JSON to CSV Converter - Export JSON Data Online

Convert JSON to CSV format instantly in your browser. Handles nested objects, arrays, and complex data structures. Free, private, no uploads required.

JSON Input

CSV Output

Options

Delimiter:

Include headers

Quote all values

Copied to clipboard

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Frequently Asked Questions

Arrays of objects work best. Nested objects are flattened using dot notation (e.g., 'address.city'). Arrays within objects are joined with semicolons. Single objects are automatically wrapped in an array.

Nested objects are flattened into columns using dot notation. For example, {user: {name: 'John'}} becomes a column 'user.name' with value 'John'. This preserves structure while remaining CSV-compatible.

You can choose comma (CSV), semicolon, tab (TSV), or pipe as the column delimiter. Semicolons work well for European locales, tabs for data import tools.

Array values are joined with semicolons by default. For example, tags: ['developer', 'designer'] becomes 'developer; designer' in CSV. Complex nested arrays are stringified.

Yes. The output is fully compatible with Excel, Google Sheets, and LibreOffice Calc. Use semicolon delimiter for European Excel versions that use comma as decimal separator.

The converter collects all unique keys across all objects and creates columns for each. Missing fields in some objects result in empty cells in the CSV.

Fields containing delimiters, quotes, or newlines are automatically quoted and escaped following CSV standards. Enable 'Quote all values' to force quoting on every field.

Yes. All conversion happens in your browser using JavaScript. No data is sent to any server. Perfect for sensitive API responses or confidential data.

Yes. Copy JSON from your API response, paste it in, and convert to CSV for analysis in spreadsheet tools. Great for exploring REST API data.

Browser-based conversion handles files up to several hundred MB depending on your device memory. For massive datasets, consider splitting into smaller batches.