Convert CSV data to JSON format instantly. Paste your CSV on the left, get JSON on the right. All processing happens in your browser - your data never leaves your device.
Customize how your JSON is generated
Field separator character
CSV input
Drag and drop a CSV file or paste your CSV data below
Drag CSV file here or click to select
Maximum file size: 5MB
JSON output
Your converted JSON will appear here
JSON output will appear here
1. Upload or paste your CSV
Drag and drop a CSV file or paste your CSV data directly. The first row must contain headers.
2. Convert to JSON
Click the "Convert to JSON" button to process your data. The conversion happens instantly in your browser.
3. Download your JSON
Download the converted JSON file or copy the output directly from the preview.
100% client-side processing
Your data never leaves your browser. Complete privacy guaranteed.
Smart type parsing
Automatically converts numbers and booleans to their proper JSON types.
Proper CSV parsing
Correctly handles quoted fields, commas, and special characters.
Flexible delimiters
Support for comma, semicolon, tab, and pipe delimiters.
Advanced configuration
Parse numbers, trim whitespace, skip empty lines, pretty print, and more.
This free tool is built and maintained by Ivandt. We create powerful data onboarding solutions for developers and believe in giving back to the open source community that has given us so much.
Ivandt is a data import SDK that helps businesses transform messy spreadsheets into clean, validated data. If you're building an application that needs to import CSV, Excel, or JSON files, check out our SDK - it handles validation, transformation, and data quality at scale.
Built with ❤️ using open source libraries including Mantine, Shiki, and Next.js
