JSON to CSV Converter
Convert JSON arrays to CSV and back. Handles nested objects with dot notation, varying keys, and special characters. Everything runs in your browser.
About JSON to CSV Conversion
JSON (JavaScript Object Notation) and CSV (Comma-Separated Values) are two of the most common data formats in software development. JSON is flexible and supports nested structures, while CSV is flat and tabular — perfect for spreadsheets, databases, and data analysis tools.
Converting between these formats is a frequent task when importing data into Excel, Google Sheets, or SQL databases, or when preparing API response data for non-technical stakeholders. This tool handles the conversion entirely in your browser, so sensitive data never leaves your machine.
How Nested Objects Are Handled
When JSON objects contain nested structures, the converter flattens them using dot notation. For example, {"address": {"city": "NYC"}} becomes a column named address.city. This approach preserves the full structure of your data while keeping the CSV output readable.
Features
- Flatten nested JSON objects using dot notation
- Handle arrays of objects with varying keys across rows
- Properly escape commas, quotes, and newlines in values
- Choose between comma, semicolon, or tab delimiters
- Convert CSV back to JSON with automatic type detection
- Download output directly as a .csv file
- 100% client-side — your data never leaves your browser
Common Use Cases
- Exporting API responses to spreadsheets
- Preparing data for database imports
- Converting configuration data between formats
- Sharing structured data with non-technical team members
- Quick data analysis and transformation