📄 JSON to CSV Converter
Convert your JSON arrays or objects into a structured CSV format. Perfect for exporting data to Excel or Google Sheets. Processed 100% in your browser for maximum privacy.
✨ Pro Tips for Best Results
- Arrays Work Best: This tool is optimized for arrays of objects (e.g.
[{...}, {...}]). - Flattening: Nested objects will be flattened using dot notation (e.g.
user.name). - Data Privacy: Your JSON is never sent to a server. Conversion happens entirely on your device.
How JSON to CSV conversion works
JSON to CSV conversion is the process of taking hierarchical data (JSON) and mapping it into a tabular format (Comma Separated Values). This is essential for data analysts who need to move data from modern web APIs into spreadsheet software like Excel or SQL databases.
Our converter works by first parsing your JSON string. It then identifies all unique keys across all objects in an array to create the header row. For every subsequent object, it maps values to their respective columns. If an object is missing a key, the cell is left empty. If a key contains a nested object, the tool recursively flattens it so no data is lost. All of this logic is executed in JavaScript within your browser session, ensuring that sensitive data never touches an external server.
Frequently asked questions
Does this handle nested JSON?
Yes, the tool flattens nested objects into a tabular format suitable for CSV.
What happens to arrays in JSON?
Arrays are usually joined into a single string or expanded into multiple columns depending on the structure.
Is there a file size limit?
The limit is based on your browser's memory. Most standard data files process instantly.
Can I download the result?
Yes, you can copy the output or download it directly as a .csv file.