CSV to JSON Converter
Convert CSV files to JSON format instantly. 100% client-side processing — your data never leaves your browser.
Privacy & Security: This tool is for personal use. Your data is not processed and is never sent to any server. All processing happens client-side in your browser.
Disclaimer: This tool is provided as-is. Please verify the output before using it in production systems.
About CSV to JSON Converter
CSV (Comma-Separated Values) and JSON (JavaScript Object Notation) are two of the most common data formats used in software development, data analysis, and web applications. This free online tool converts your CSV files to JSON format instantly, with no need to upload your data to any server.
How to Use
- Drag and drop your CSV file onto the upload area, or click to browse and select a file.
- Configure options: choose your delimiter, specify if the first row contains headers, and select pretty print formatting.
- Click Convert to JSON to transform your data.
- Copy the result to your clipboard or download it as a .json file.
Frequently Asked Questions
Is my CSV data kept private?
Absolutely. All conversion happens entirely in your browser using JavaScript. No data is sent to any server, logged, or stored anywhere. You can safely use this tool with sensitive data.
What delimiters are supported?
The tool supports comma (,), semicolon (;), tab (\t), and pipe (|) delimiters. You can also choose auto-detect to let the tool try to determine the delimiter automatically.
Is there a file size limit?
Yes, the tool supports CSV files up to 10MB. For larger files, consider splitting them or using a dedicated data processing tool.
Can I convert JSON back to CSV?
Yes! Check out our JSON to CSV Converter tool for the reverse operation.
Does this tool handle nested JSON?
CSV to JSON conversion creates a flat array of objects. For nested structures, you would need to process the resulting JSON further.