CSV to JSON Converter
Convert CSV data to JSON format with custom column handling
CSV
JSON
Data
Converter
About This Tool
Convert CSV (Comma Separated Values) data to JSON (JavaScript Object Notation) format with options for header row handling.
Need to convert CSV to JSON Lines format for big data or streaming? Try our CSV to JSONL Converter for line-by-line JSON output.
Want to preview your CSV before converting? Use our CSV Viewer for color-coded visualization and easy editing.
Explore more CSV tools in our CSV tools collection.
Features:
- Support for header row detection or generic column naming
- Customize column names after initial conversion
- File upload support for CSV files
- Copy to clipboard and download JSON functionality
- Handles quoted fields and basic CSV parsing
- Load sample data to test the functionality
All processing happens in your browser - no data is sent to any server.
Frequently Asked Questions (FAQ)
What is CSV to JSON conversion?
CSV to JSON conversion transforms comma-separated values (CSV) data into JavaScript Object Notation (JSON) format. This is useful for web applications, APIs, and data processing that require structured JSON data. If you need to format or validate your JSON output, our JSON Formatter tool can help you beautify and check your results.
Should I use the first row as column names?
Enable "First row is column names" if your CSV file has headers in the first row (like Name, Age, City). If disabled, generic column names (column1, column2, etc.) will be used instead.
Can I customize the column names after conversion?
Yes! After the initial conversion, a column editor section appears with input fields for each column. You can modify any column names and click "Update Column Names" to regenerate the JSON with your custom field names.
What CSV formats are supported?
The tool supports standard CSV format with comma separators. It handles quoted fields containing commas and basic CSV parsing. For complex CSV files with special characters, ensure proper formatting.
Is my data processed securely?
Yes, all CSV processing happens entirely in your browser. No data is sent to any server, ensuring complete privacy and security of your information.
Can I download the converted JSON?
Yes, after conversion you can copy the JSON to clipboard or download it as a .json file. The download feature creates a properly formatted JSON file ready for use.