CSV to JSON Converter
Convert your CSV data into well-formatted JSON instantly. All processing happens in your browser.
What is CSV to JSON Conversion?
CSV (Comma-Separated Values) and JSON (JavaScript Object Notation) are two of the most popular data formats. Converting CSV to JSON transforms tabular spreadsheet data into a structured, hierarchical format commonly used in APIs, web applications, and data interchange. This tool performs the conversion entirely in your browser, ensuring your data never leaves your device.
How to Use
- Paste your CSV data into the input area, or upload a CSV file using the Upload button.
- Choose your delimiter (or let auto-detect handle it) and configure output options.
- Click the Convert button or start typing to see instant results.
- Copy the JSON output or download it as a .json file.
Features
- Auto-detect delimiter (comma, semicolon, tab, pipe)
- Supports quoted fields with commas and newlines
- Output as Array of Objects or Array of Arrays
- Syntax-highlighted JSON output
- File upload and sample data loading
- Copy to clipboard and download as file
- 100% client-side processing - no data sent to any server
FAQ
Is my data secure?
Yes. All processing happens entirely in your browser. No data is uploaded to any server.
Can I handle large CSV files?
The tool can handle files up to several MB depending on your browser's memory. For very large files, consider splitting them first.
What about fields with special characters?
The parser correctly handles quoted fields containing commas, newlines, and escaped quotes per the CSV specification.