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CSV-to-JSON Converter

Convert pasted or uploaded CSV or TSV data into validated, formatted JSON directly in your browser.

Upload CSV or TSV file (optional)

or drag and drop a CSV or TSV file here

Up to 5 MB

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How to use CSV-to-JSON Converter

  1. 1Paste CSV into the input or choose a CSV/TSV file from your device.
  2. 2Choose the delimiter used by the file, then press Convert to JSON.
  3. 3Review the row and column count, then copy the JSON or download it as a .json file.

Useful tips

  • •Quoted fields can contain delimiters, escaped double-quotes and line breaks; keep those values wrapped in double-quotes.
  • •Every header must be named and unique, and each data row should contain the same number of fields as the header row.
  • •TSV files automatically switch the delimiter to Tab when uploaded, while comma, semicolon, tab and pipe can also be selected manually.

Frequently asked questions

Can CSV fields contain commas or line breaks?

Yes. Properly quoted fields can contain the selected delimiter, escaped double-quotes and line breaks.

What happens if a row has the wrong number of fields?

The converter shows the affected row instead of silently dropping or misaligning data.

Is my CSV uploaded?

No. Pasted text and uploaded CSV/TSV files are parsed locally in your browser and are not sent to Wid9et.