JSON to CSV converter

What is JSON to CSV conversion?

JSON to CSV conversion transforms structured JSON data — typically an array of objects — into a flat, tabular format that spreadsheets, databases, and traditional data tools understand natively. Each object becomes a row, and each unique key becomes a column header.

This is one of the most common data transformations in day-to-day engineering and analytics work, bridging the gap between web APIs that speak JSON and tools that expect rows and columns.

When to convert JSON to CSV

• Importing API responses into a spreadsheet for quick analysis
• Preparing data for bulk database imports that accept CSV
• Sharing structured data with teammates who prefer tabular formats
• Feeding data into reporting tools or BI platforms

How nested JSON is handled

Flat JSON objects map directly to CSV rows, but real-world data is often nested. When the "flatten nested objects" option is enabled, this tool recursively walks nested objects and arrays, producing dot-notation column headers like address.city or tags.0. When flattening is disabled, nested values are serialized as JSON strings in the corresponding cell.

From CSV exports to instant dashboards

If you're converting JSON to CSV just to import it into a dashboard or reporting tool, Basedash can skip the middle step entirely. Connect your data source directly and describe the chart or metric you want in plain English — Basedash writes the query, runs it, and renders the visualization in seconds.