CSV to JSON
Paste any CSV data and convert it to a JSON array of objects. The first row is treated as headers. Choose between pretty-printed or minified JSON output and download the result as a .json file.
Your files stay private
All processing happens directly in your browser using WebAssembly. Your files are never uploaded to any server and never leave your device.
How to Use CSV to JSON
- 1
Paste your CSV data (first row = headers)
- 2
Choose pretty-print or compact output
- 3
Click Convert to JSON
- 4
Copy or download the JSON file
Frequently Asked Questions
Does it support quoted fields with commas?
Basic quoted fields are supported. For complex CSV with nested quotes, consider preprocessing the data first.
Can I convert back from JSON to CSV?
Not yet — currently only CSV to JSON is supported. JSON to CSV conversion is planned.
Features
- Auto-detects headers from first row
- Pretty-printed or minified output
- Download as .json file
- One-click copy to clipboard
- Browser-based — no upload needed
Supported Formats
Input
Output
JSONPrivacy First
All conversions happen in your browser. Nothing is uploaded to our servers. Your files remain completely private.