CSV ↔ JSON

Round-trip between CSV and JSON in your browser. RFC 4180 quoting, configurable delimiter, optional header row and number/boolean coercion.

DelimiterFirst row is headerParse numbers and booleans

CSV

JSON

[
  {
    "name": "Alice",
    "role": "admin",
    "active": true
  },
  {
    "name": "Bob",
    "role": "user",
    "active": false
  },
  {
    "name": "Charlie",
    "role": "user",
    "active": true
  }
]

Data stays on your device. Parsing and formatting run locally. Nothing is uploaded.