JSON ↔ CSV Converter

Convert between JSON and CSV formats with ease. All processing happens in your browser - your data remains private and secure. Perfect for data transformation, API responses, and spreadsheet preparation.

Input

Output

Options

How to Use

  1. Paste or Upload: Add your JSON or CSV data to the input field, or upload a file
  2. Configure Options: Choose delimiter, quote character, and other formatting preferences
  3. Convert: Click the Convert button to transform your data
  4. Copy or Download: Get your converted data via copy to clipboard or file download
  5. Share (Optional): Generate a shareable link to send your conversion setup to others

Example: JSON to CSV

Input JSON:

[{"product": "Apple", "price": 1.50}, {"product": "Banana", "price": 0.80}]

Output CSV:

product,price
Apple,1.50
Banana,0.80

Frequently Asked Questions

Is my data secure when using this converter?

Yes, absolutely. All conversion happens entirely in your browser. Your data never leaves your device or gets sent to any server. This ensures complete privacy and security.

What file formats are supported for upload?

You can upload .json, .csv, and .txt files. The tool will auto-detect the format based on content. Maximum file size is 2MB for optimal performance.

How does the auto-detect delimiter work?

The tool analyzes the first few rows of your CSV data to identify the most likely delimiter (comma, semicolon, tab, or pipe) based on pattern consistency and frequency.

Can I convert nested JSON objects to CSV?

Yes! Enable the "Flatten Nested Objects" option to automatically flatten complex JSON structures into CSV-friendly format. Nested properties will be combined with dot notation (e.g., "address.city").

What happens if my CSV has different numbers of columns per row?

The converter handles irregular CSV data gracefully. Missing values become empty strings in JSON, and extra values are preserved. Error messages will indicate any parsing issues with specific row/column locations.

Can I share my conversion settings with others?

Yes! Use the "Generate Shareable Link" feature. If your data is under 10KB, it will be included in the link (compressed). Larger datasets will share only the configuration settings.

Last updated: December 2024