Convert CSV to JSON
When working with APIs, databases, or JavaScript applications, JSON is the standard data format. This tool converts CSV data — whether pasted from a spreadsheet or a raw file — into a properly structured JSON array of objects, using the header row as keys.
Open JSON to CSV Converter →How to Convert CSV to JSON
- Open the JSON to CSV Converter on ToolPrime
- Select the "CSV to JSON" tab
- Paste your CSV data (with headers in the first row)
- Click Convert to generate the JSON array
- Copy the output to use in your application
Common Use Cases
- Import spreadsheet exports into a Node.js application
- Prepare CSV datasets for API bulk-upload endpoints
- Convert Excel exports into JSON for frontend rendering
- Transform flat-file data for NoSQL database imports
Frequently Asked Questions
What delimiter does the converter support?▾
The tool auto-detects commas, semicolons, and tab delimiters. It picks the most common separator found in your data.
Are numeric CSV values converted to JSON numbers?▾
Yes, the converter automatically detects numeric strings and converts them to proper JSON number types.