JSON to CSV Converter

The tool accepts a JSON array of objects (e.g., [{"name":"Alice","age":30}, {"name":"Bob","age":25}]) or a single JSON object. Each object becomes a row in the CSV, and all unique keys become column headers.

If some objects have fields that others don't, the missing fields appear as empty cells in the CSV. All unique keys across all objects are collected as column headers.

Yes! After converting, click the "Download .csv" button to save the file directly to your computer. The file is generated entirely in your browser.

Nested objects and arrays are serialized as JSON strings within CSV cells. For example, an address object like {"city":"NYC","zip":"10001"} becomes a single CSV field. This preserves the data while keeping the CSV structure flat and compatible with spreadsheet applications.

Converting nested JSON data into flat CSV rows with headers for spreadsheet analysis.

Nested JSON fields can be flattened into dotted notation like "address.city" as CSV headers.

Comma by default. Some formats use semicolons, tabs, or pipes for different locales.

Yes. CSV to JSON conversion creates array of objects from header-data row pairs.

CSV loses nested structures and data type information present in JSON.

When working with spreadsheets, databases, or needing human-readable tabular data.