Free CSV to JSON Online
Convert CSV data to JSON format instantly with our free online CSV to JSON converter. Upload a CSV file or paste CSV data directly, and get perfectly structured JSON output. Supports custom delimiters (comma, semicolon, tab, pipe), header row detection, and proper data type handling. Preview the JSON output with syntax highlighting and download as a .json file. Also integrates with our backend API for server-side processing of large files. The conversion engine handles quoted fields, escaped characters, and multi-line values correctly.
How to Use CSV to JSON
Input CSV Data
Upload a .csv file or paste CSV data directly into the editor. Sample data is provided to test with.
Configure Options
Select the delimiter (comma, semicolon, tab, pipe) and toggle whether the first row contains headers.
Convert & Download
Click Convert to JSON. Copy the result to clipboard or download as a .json file.
Features
Custom Delimiters
Support for comma, semicolon, tab, and pipe delimiters. Handles various CSV formats.
Header Detection
Toggle first-row-as-header on or off. Auto-generates column names when no header is present.
File Upload & Paste
Upload .csv files via drag-and-drop or paste CSV data directly into the editor.
Copy & Download
Copy JSON to clipboard or download as a .json file. Row count displayed for verification.
Benefits of Using CSV to JSON
Completely Free
Use CSV to JSON without any cost, limits, or hidden fees. No premium plans needed.
No Installation
Works directly in your browser. No software downloads or plugins required.
100% Private
Your files and data are processed locally. Nothing is uploaded to external servers.
Works Everywhere
Compatible with Chrome, Firefox, Safari, Edge on desktop, tablet, and mobile.
No Sign-Up
Start using the tool immediately. No account creation or email verification.
Always Available
Access this tool 24/7 from anywhere in the world, on any device.
Frequently Asked Questions
Complete Your Converters Workflow
These free tools work seamlessly with CSV to JSON to handle every step of your workflow.