JSON to CSV Converter

APIs speak JSON, but spreadsheets, finance teams and many import tools want CSV. This converter turns a JSON array of objects into a CSV table — one row per object and one column per key, collected from every object so no field is lost — and converts CSV back into JSON. You can choose a comma, semicolon, tab or pipe delimiter, open .json and .csv files directly, and copy or download the result. Everything runs in your browser, so customer exports and internal data stay on your computer.

1. 1Choose the direction: JSON to CSV or CSV to JSON.
2. 2Paste your data or open a .json or .csv file.
3. 3Pick the delimiter your target program expects: comma for most tools, semicolon for Excel in many European locales, tab for pasting into sheets.
4. 4Check the output. For JSON to CSV, the header row lists every key found in the data.
5. 5Copy the result or download it as a file.

The JSON to CSV Converter runs entirely in your browser — nothing you enter is uploaded, stored, or logged.

• Nested objects and arrays are written into a single cell as JSON text. Flatten deeply nested data first if you need each value in its own column.
• Values containing the delimiter, quotes or line breaks are wrapped in quotes automatically, which is the CSV standard.
• If Excel shows everything in one column, it expected a different delimiter; try semicolon or use its Data → From Text import.
• Spreadsheets drop leading zeros from things like PIN codes and phone numbers. Format those columns as text when importing.