CSV → JSON

Paste a CSV string or upload a file and this CSV to JSON converter produces a clean JSON array instantly. When the first row is a header, each row becomes an object keyed by column name; without a header, you get an array of arrays. Supports comma, tab, semicolon, and pipe delimiters with a single dropdown.

Quoted fields - including those that contain the delimiter, embedded newlines, or escaped quotes - are handled correctly. Rows with the wrong column count are flagged with a clear error message instead of silently corrupting the output. Copy the result or download it as a .json file. All conversion happens in your browser - nothing is uploaded, no signup required.