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JSON to CSV converter

Convert JSON arrays to CSV format instantly. Handles nested keys, escapes commas and quotes. Download as .csv file or copy to clipboard.

csv
Paste a JSON array above

What is JSON to CSV Converter?

A JSON to CSV converter transforms structured JSON array data into comma-separated values format that can be opened in spreadsheet applications like Excel, Google Sheets, or LibreOffice Calc. JSON is the standard format for APIs and databases, but when you need to analyze data, create reports, or share with non-technical stakeholders, CSV is far more accessible. This tool automatically detects all unique keys across every object in your JSON array and uses them as column headers. Values containing commas, double quotes, or newlines are properly escaped following RFC 4180 standards, so your CSV imports cleanly into any spreadsheet tool. The conversion happens entirely in your browser — your data is never uploaded to any server. You can copy the CSV output to your clipboard or download it directly as a .csv file. Whether you are exporting database records, converting API responses for analysis, or preparing data for a business report, this converter handles the tedious formatting work instantly.

How to Use JSON to CSV Converter

  1. 1

    Paste a JSON array

    Paste a JSON array of objects into the input area. Each object in the array becomes one row in the CSV output. The tool auto-detects all keys across all objects to build the header row.

  2. 2

    Review the CSV output

    The converter instantly generates CSV with proper escaping. Values with commas or quotes are wrapped in double quotes automatically. Check the preview to confirm your data looks correct.

  3. 3

    Download or copy

    Click Download to save the result as a .csv file that opens directly in Excel or Google Sheets. Or click Copy to paste the CSV data into another application.

Features

  • Auto-detects all column headers from JSON keys
  • RFC 4180 compliant CSV escaping for commas and quotes
  • Download as .csv file for Excel and Google Sheets
  • Handles null values, numbers, booleans, and strings
  • Processes arrays with inconsistent keys across objects
  • Zero server upload — conversion runs entirely in your browser

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Frequently Asked Questions

What JSON format does this tool accept?+
The tool accepts a JSON array of objects, like [{...}, {...}]. Each object becomes one CSV row. If you paste a single object or a non-array value, the tool will show an error asking for an array format.
How are nested objects handled in the CSV?+
Nested objects and arrays are converted to their string representation in the CSV cell. For deeply nested data, consider flattening your JSON first for cleaner spreadsheet output.
What happens if objects have different keys?+
The converter collects all unique keys from every object in the array and uses them as column headers. If an object is missing a key, that cell is left empty in the CSV row.
Will my CSV open correctly in Excel?+
Yes. The output follows RFC 4180 CSV standards with proper escaping of commas, quotes, and newlines. Excel, Google Sheets, and LibreOffice all import it correctly.
Is there a row limit for the conversion?+
There is no artificial row limit. The tool processes the entire array in your browser memory. Arrays with tens of thousands of rows convert in seconds on modern devices.
Can I convert CSV back to JSON?+
Yes! Use our CSV to JSON converter tool for the reverse operation. It parses CSV headers and rows back into a JSON array of objects with the same structure.