Tuilio

CSV to JSON

Paste CSV and get a JSON array of objects. Delimiters are detected automatically from the header row.

CSV input

How to cSV to JSON

  1. Paste CSV data (first row = column headers).
  2. Click Convert.
  3. Copy JSON or download data.json.

How to convert CSV to JSON without uploading files

Private by design — conversion runs locally in your browser. Your spreadsheet data is not uploaded to Utilio servers for this tool.

Related tools

JSON to CSVJSON formatter

Frequently asked questions

Does the first row need to be headers?

Yes — the first line is treated as column names for the JSON object keys.

What delimiters work?

Comma, tab, semicolon, and pipe are auto-detected from the first line.