Convert large JSON datasets up to 100MB into spreadsheet-ready CSVs. Optimized for complex arrays and nested objects.
Drag & drop or click to upload JSON file, or paste content
CSV preview will appear here
Turn your complex JSON arrays and objects into clean, spreadsheet-ready CSV files. Perfect for data analysis and reporting.
Paste your JSON array or object directly into the editor. We also support pulling data from the main JSON Workbench editor.
Our tool intelligently flattens nested objects using dot notation, ensuring all your data points are preserved in columns.
Configure your delimiter (comma, tab, semicolon) and download the file for use in Excel, Google Sheets, or any database.
A: Yes, completely free.
A: All processing happens in your browser. No file is uploaded.
A: Yes, nested objects are flattened automatically.
When you have complex API responses, simple converters often fail or show [object Object]. JSON Workbench is built to handle production-grade data.
Privacy First
Sensitive payloads never leave your browser. All flattening and conversion happens locally.
Dot Notation Flattening
Nested fields like address.city are automatically extracted into their own safe columns.
Sheet Ready
Optimized for direct import into Excel and Google Sheets with standard RFC 4180 compliance.