JSON to CSV Converter

Convert JSON arrays and objects to CSV format instantly. Supports nested JSON objects with automatic key flattening and custom delimiter options.

3 rows generated

About JSON to CSV Conversion

JSON to CSV conversion is essential for moving data between web APIs and spreadsheet applications. JSON is the standard data format for APIs, while CSV is the universal format for data analysis in Excel, Google Sheets, and databases. This converter handles the translation automatically, including nested object flattening and proper escaping.

Use Cases

  • API Data Export: Convert API response data to spreadsheets for analysis
  • Data Migration: Move data between different systems that use different formats
  • Reporting: Create CSV reports from JSON data sources
  • Database Import: Prepare JSON data for bulk import into databases
  • Data Analysis: Load API data into Python/R/Excel for analysis

Frequently Asked Questions

How do I convert JSON to CSV?
Paste your JSON array into the input field and click 'Convert to CSV'. The tool parses your JSON, extracts all unique keys as headers, and creates rows for each object. Nested objects are flattened with dot notation (e.g., `address.city`). Arrays of primitives are converted to their string representation.
What JSON structures are supported?
This converter supports JSON arrays of objects (`[{...}, {...}]`), single objects (`{...}`), and deeply nested structures. Nested objects are flattened with dot-notation keys. Arrays within objects and arrays of objects are handled. For complex nested arrays, use the JSON formatter to inspect your data first.
How are nested objects handled?
Nested objects are automatically flattened using dot notation. For example, `{ "name": "Alice", "address": { "city": "NYC", "zip": 10001 } }` becomes columns: `name`, `address.city`, `address.zip`. This ensures no data is lost while maintaining a flat CSV structure.
What delimiter options are available?
You can choose between comma (`,`) and tab (`\t`) delimiters. Comma is standard for CSV files that open in Excel. Tab is useful when your data contains commas. For other delimiters like semicolons, you can copy the output and use find-and-replace.
Why is my JSON not converting?
Common issues: (1) Your JSON is invalid — use the JSON formatter to validate it first. (2) Your JSON is not an array — if it's a single object, it will still work (single row). (3) Your JSON is deeply nested with inconsistent keys — try flattening nested objects first. (4) Your JSON is too large — try splitting it into smaller chunks.
Is this converter secure for sensitive data?
Yes. All processing happens entirely in your browser. Your JSON data is never sent to any server. This makes it safe for converting sensitive data like API responses containing customer information or internal data.

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