Input Format:
Your CSV should have headers in the first row. Each subsequent row becomes a JSON object with header names as keys.
Features:
- Handles quoted fields and escaped quotes
- Auto-detects numbers and booleans
- Converts empty values to null
Privacy: All conversion happens in your browser. Your data never leaves your device.
Working with APIs or JavaScript? Convert spreadsheet data to JSON format with automatic type detection.
🔢 Auto type detection - Numbers, booleans, nulls detected
📋 Header-based keys - First row becomes JSON keys
âš¡ Fast conversion - Process large files instantly
🔒 100% private - All processing in browser
Headers Required
The first row of your CSV should contain column headers. These become the JSON object keys.
Type Detection
Numeric values are converted to numbers, 'true'/'false' to booleans, and empty values to null.
JSON to CSV
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