CSV to JSON Converter: Parse Spreadsheets to JSON Instantly

Converting CSV to JSON for APIs and Databases

CSV files from Excel exports, database dumps, and analytics tools need to be transformed into JSON before being consumed by REST APIs, NoSQL databases, or JavaScript applications. Our browser-based converter handles this transformation instantly.

Smart Type Inference

The converter automatically infers data types from CSV values:

• Numeric strings ("42") → JavaScript number
• "true" / "false" → JavaScript boolean
• Empty fields → null
• Everything else → string

Flexible Parsing Options

• Custom delimiter (comma, semicolon, tab, pipe)
• First-row-as-header toggle
• Output as array of objects or array of arrays

// CSV Input
id,name,city,active
1,Alice,London,true
2,Bob,Berlin,false

// JSON Output
[
  { "id": 1, "name": "Alice", "city": "London", "active": true },
  { "id": 2, "name": "Bob",   "city": "Berlin", "active": false }
]