Convert Data Between CSV and JSON

Whether you are migrating a legacy database, configuring a REST API, or simply moving data from Excel to a web application, converting format is essential. This tool creates a bridge between the spreadsheet world (CSV) and the web world (JSON).

CSV (Comma Separated Values)

Best for flat, 2D data like spreadsheets. It's compact and easy for humans to read in rows and columns.

id,name,role
1,Alice,Admin
2,Bob,User

JSON (JavaScript Object Notation)

The standard for web APIs. It supports hierarchy, nested lists, and strict data types (boolean, number, string).

[
{ "id": 1, "name": "Alice" },
{ "id": 2, "name": "Bob" }
]

Why use this converter?

Smart Parsing

We handle the tricky edge cases. If your CSV contains commas inside quotes (e.g., "New York, NY"), simple splitters break. Our regex engine respects CSV standards (RFC 4180).

Type Inference

CSV is text-only. JSON is typed. We automatically detect if "true" is a boolean or if "123.45" is a number, so your API receives correct data types.

Privacy First

Data conversion happens 100% in your browser using JavaScript. Your sensitive customer lists or financial data never leave your device.

CSV to JSON

Is this tool broken?