CSV ↔ JSON Converter

Convert between CSV and JSON formats. All processing happens in your browser.

Convert

Paste CSV or JSON. CSV should have a header row. JSON should be an array of objects.

Input (CSV)

CSV to JSON Converter

Convert CSV (comma-separated values) to JSON and vice versa. CSV is used in Excel, Google Sheets, and data exports; JSON is used in APIs and web apps. This tool handles quoted fields, commas inside values, and multi-line data. Perfect for importing spreadsheet data into your app or exporting API data to Excel.

How to Convert CSV to JSON

Select CSV → JSON or JSON → CSV mode.
Paste your data. For CSV, the first row becomes the keys. For JSON, each object becomes a row.
Click "Convert" and copy the result. Use "Swap" to switch input and output.

Use Cases

Import Excel data into a database, convert API responses to CSV for reporting, prepare data for charts, or migrate between systems. Handles complex CSV with commas and quotes. All processing in your browser.