CSV → JSON

It converts a CSV table into a JSON array of objects. With the default "First row is header" option, each column becomes a key and every data row becomes an object, for example the row "Aarav,29" becomes {"name": "Aarav", "age": 29}. Without a header row, columns are named column1, column2, and so on.

CSV is text, so every value is read as a string. Enable the "Convert numeric strings to numbers" option to turn values that look numeric (like 29 or 4.5) into JSON numbers. Be careful: leading zeros like "007" or long IDs are safer left as strings.

Comma, semicolon, tab, and pipe. Auto-detect examines the first lines and picks the delimiter that appears most consistently, which is handy for files exported from European Excel versions that use semicolons.

Duplicate headers are automatically renamed with a suffix — name, name_2, name_3 — so the generated JSON objects always have unique keys and no data is lost.

Yes, 100%. The conversion runs in your browser with no network requests, so it is fully offline and safe for confidential data. You can copy the result or download it as a .json file.

Yes. The parser handles standard quoted fields, escaped double quotes, and newlines inside quoted cells, so multi-line descriptions or fields containing commas convert correctly.