Skip to main content
CSV First Aid

CSV to JSON

CSV in, JSON array out. Headers become the object keys. Works with any delimiter the file uses — comma, semicolon, tab, pipe.

Drop your CSV file here

or click to browse

Converts CSV rows to a JSON array of objects.

How it works

  1. 1Drop your CSV file above. It stays in your browser — nothing is uploaded.
  2. 2CSV First Aid parses the file, detects the delimiter, and converts each row to a JSON object using headers as keys.
  3. 3Preview the JSON output and download it with one click.

FAQ

Does it handle nested JSON?

The converter produces a flat array of objects — one object per row, headers as keys. For nested structures, you'd need to transform the output.

What about special characters and quotes?

Fully handled. Escaped quotes, commas inside fields, multiline values — all parsed correctly per RFC 4180.

Is my data uploaded?

No. Everything runs in your browser. Your file never leaves your device.

Related tools

CSV to Excel (XLSX)

CSV in, .xlsx out. Encoding is detected from the bytes, special characters survive the round-trip, column widths auto-fit. Opens the same in Excel, Google Sheets, and Numbers.

CSV Viewer

A CSV rendered as a real table — zebra rows, a search box, page through 200K rows without ever opening Excel. Encoding and delimiter are figured out from the bytes.

CSV Validator

Before COPY FROM or pd.read_csv(), run this. 14 checks — encoding, BOM, delimiter, quotes, column counts, duplicates, invisible chars — each with the line numbers that triggered it.