CSV to JSON Converter
100% Client-Side PrivacyConvert CSV data to JSON format instantly in your browser. Free online CSV to JSON converter with no signup required.
Quick Features
- Paste CSV or upload .csv files
- Custom delimiter support (comma, semicolon, tab)
- Toggle first-row-as-header option
- Array or nested object output
- No data sent to any server
How to use CSV to JSON Converter
Paste CSV Data
Copy your CSV data and paste it into the input field. Or drag and drop a .csv file.
Choose Options
Select delimiter (comma, semicolon, tab), toggle header row, and choose output format (array or nested).
Download JSON
Preview the JSON output and copy to clipboard or download as .json file.
Why choose this tool
- Completely free — no signup or hidden limits
- Runs 100% in your browser — your data stays private
- Instant results, no downloads or installs
- Works on any device with a modern browser
Common Use Cases
- Spreadsheet data to JSON for web apps
- Database imports from CSV exports
- API payload preparation from tabular data
- Data migration between systems
Frequently Asked Questions
How do I convert CSV to JSON?
Paste your CSV data into the input field, configure the delimiter and header options, and click convert. The tool parses rows into JSON objects or arrays instantly.
What delimiters are supported?
Comma, semicolon, and tab delimiters are supported. You can also type a custom delimiter.
Is my data secure?
Yes. All processing happens in your browser. Your data never leaves your device.
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