CSV to JSON

What CSV to JSON does

Convert delimited rows into JSON objects with headers, or arrays of values without headers.

Input

CSV

Output

JSON

• Quoted fields can contain delimiters and line breaks. With headers enabled, header names become object keys.

How to use CSV to JSON

1. Paste or edit CSV in the source pane, or load a CSV file; conversion updates as you edit.
2. Detect the delimiter automatically or choose comma, semicolon, tab, or pipe. Set whether the first row contains headers.
3. Choose formatted or compact JSON, then copy or download the result.

When to use it

Turn a CSV export into JSON without losing leading zeros in account IDs.

Example

id,name
00123,"Doe, Jane"

[{"id":"00123","name":"Doe, Jane"}]

Important limitations

• Cell values remain strings, including numbers and leading-zero IDs. Use unique headers: duplicate names can overwrite values in the same JSON object. Oversized inputs are rejected to protect browser memory.