JSON to CSV Converter
Paste any JSON array and instantly get a clean, downloadable CSV file. Works with nested objects, custom delimiters, and large datasets — entirely in your browser, no data ever leaves your device.
How the JSON to CSV Converter Works
The converter parses your JSON input and maps each top-level array element to a CSV row. Column headers are automatically derived by scanning all keys across every object in the array, so even sparse or inconsistent data sets produce a complete, well-structured CSV. Fields present in some objects but absent in others are represented as empty cells, ensuring the output is always valid and importable into Excel, Google Sheets, or any data analysis tool without manual cleanup.
Nested objects are flattened using dot-notation keys — for example a JSON propertyuser.address.citybecomes a single CSV column of the same name. Arrays nested inside objects are serialised as JSON strings so their content is preserved rather than discarded. Values containing commas, quotes, or newlines are automatically escaped following RFC 4180, the official CSV standard.
When to Use a JSON to CSV Converter
REST APIs and databases commonly return data in JSON format, but spreadsheet users, data analysts, and business stakeholders often need that data in CSV or Excel format. A JSON to CSV converter closes that gap without requiring any coding. Common use cases include exporting API responses for reporting, migrating data between systems, sharing structured data with non-technical team members, and loading JSON data into CSV-based ETL pipelines or BI tools such as Power BI, Tableau, and Looker.
Unlike writing a one-off script in Python or JavaScript, this browser-based tool requires no setup, handles edge cases like null values, booleans, and Unicode characters out of the box, and produces a correctly escaped CSV in under a second — regardless of how large or deeply nested your JSON is.
Frequently Asked Questions
How do I convert JSON to CSV online?
Paste your JSON array into the input panel on this page and click Convert. The tool instantly generates a CSV with the first row as headers derived from your JSON keys. You can then copy the result to the clipboard or download it as a .csv file ready to open in Excel or Google Sheets.
What JSON structure is required for CSV conversion?
The converter expects a JSON array of objects, for example [{"name":"Alice","age":30},{"name":"Bob","age":25}]. Each object becomes one row, and the combined keys across all objects become the CSV headers. If some objects are missing a key, the corresponding cell is left empty. Primitive arrays and single objects are also accepted and handled automatically.
Can this converter handle nested JSON objects?
Yes. Nested objects are flattened using dot notation. For example, {"address":{"city":"Dubai","country":"UAE"}} becomes two CSV columns named address.city and address.country. Nested arrays are serialised as a JSON string in a single cell so no data is lost during the conversion.
What delimiter does the JSON to CSV converter use?
The default delimiter is a comma (,), which produces a standard .csv file compatible with Excel, Google Sheets, LibreOffice Calc, and most data tools. You can switch to a semicolon (;) for European locales, a tab character for TSV output, or a custom character using the delimiter option before converting.
Is my JSON data sent to a server when converting?
No. The entire JSON to CSV conversion runs locally in your browser using JavaScript. Your data is never uploaded to any server, logged, or stored. This makes the tool safe to use with sensitive or confidential JSON payloads such as API responses containing personal data or internal business records.