Header rows
Keep the header option on when the first CSV row contains column names. Blank or duplicate headings are normalized into stable JSON keys.
Data tool
CSV to JSON converter
Paste CSV or choose one local CSV file to turn rows into JSON objects or arrays. Parsing happens locally in the browser, including quoted fields and escaped quotes.
Input
CSV source
Output
JSON result
Array mode
Turn the header option off when you want each CSV record represented as a plain array instead of an object.
Limitations
The converter handles common CSV quoting rules. It does not infer numbers, booleans, dates, or nested objects from text values.
Privacy
CSV is processed locally in the page. The input is not uploaded, stored, or sent to a server by this tool, whether pasted or chosen from a file.