JSON Input
CSV Output
About JSON to CSV Converter
Moving data between web APIs (JSON) and spreadsheet software (CSV) is a common task. Our free online JSON to CSV Converter instantly translates complex JSON arrays into flat, spreadsheet-ready CSV files, and vice versa.
How It Works
When converting JSON to CSV, the tool flattens the JSON object structure, extracts the keys to create a header row, and maps the corresponding values into comma-separated rows. When converting CSV to JSON, it uses the header row as keys to construct an array of objects.
Common Use Cases
- Exporting database or API data (JSON) to analyze in Microsoft Excel or Google Sheets
- Converting spreadsheet data (CSV) into a format suitable for web applications
- Preparing data for machine learning models or data visualization tools
- Migrating data between different software platforms
Frequently Asked Questions
The tool attempts to 'flatten' nested objects by combining keys (e.g., 'user.address.city'). However, highly complex or deeply nested JSON structures may not translate perfectly into a flat 2D CSV format.
Yes, the tool can process large files. Since it runs entirely in your browser, the maximum file size depends on your computer's available RAM.
Nested objects are flattened using dot notation. For example, {user: {name: 'John'}} becomes a column 'user.name'. Arrays are handled similarly with index notation.
Yes, the tool works bidirectionally. Paste CSV data and it generates properly structured JSON with each row as an object and headers as keys.
Common delimiters include comma (,), semicolon (;), tab, and pipe (|). The tool auto-detects the delimiter or lets you specify one manually.
Yes, the generated CSV is fully compatible with Microsoft Excel, Google Sheets, and other spreadsheet applications. Download the file and open it directly.