JSON to CSV Converter

Upload a JSON file and convert it to a clean CSV spreadsheet. Extracts keys as headers for structured data output.

Drop your JSON file here

Transform your JSON data into CSV format

Select JSON File

Supports .json and .txt files up to 10MB

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Files are processed in memory and deleted immediately. We never store your data.

Why Convert JSON to CSV?

CSV files are universally supported by spreadsheet applications, databases, and data analysis tools. Converting JSON to CSV makes your data accessible in Excel, Google Sheets, and SQL databases for easier analysis, reporting, and sharing.

How the Conversion Works

Our converter reads your JSON array of objects, extracts all unique keys as CSV column headers, and maps each object to a row. Nested objects are flattened and arrays are serialized. The output is a clean, properly formatted CSV file ready for import.

Frequently Asked Questions

What JSON structures are supported?

The converter expects a JSON array of objects at the top level (e.g. [{...}, {...}]). All unique keys across all objects become CSV column headers. Objects missing a key will have an empty value in that column.

What happens with nested objects or arrays in the JSON?

Nested objects are flattened using dot notation (e.g. "address.city") and arrays are serialized as a semicolon-separated string within a single cell. This keeps the CSV flat and importable into spreadsheets.

Is there a size limit for the JSON file?

Yes, files up to 10MB are supported. Most JSON API responses or exported datasets fall well within this limit. For very large files consider splitting the array into chunks before converting.

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