onul.works

CSV to JSON

Convert CSV data to JSON format and copy the result.

⌘ Runs in browser ◴ No data stored ⌁ Free

Search-oriented intent

Convert CSV text into JSON arrays or objects

Use this to turn tabular CSV text into structured JSON that can be used for APIs, configs, or downstream processing.

The typical search intent for this tool is converting raw CSV into JSON, either as an array of rows or as key-value objects.

Delimiter selection, header mode, quoted fields, and empty-cell behavior all affect the output format, so confirm parser options before extracting data.

Choose output shape

Enable header mode to map each row to objects by column name; disable it to keep array-of-arrays output.

Handle edge cases

Test with comma/tab/semicolon/pipe, quoted fields, escaped quotes, and empty values to validate your real input pattern.

Post-conversion checks

After conversion, review inferred types (number/boolean/string), duplicate headers, and whether output row count matches the original data rows.

Because CSV parsing and object mapping can hide ambiguities, run a quick validation pass before saving, sending, or deploying the JSON.

CSV/TSV input
JSON output

How to use

  1. 1 Paste or enter the CSV data you want to convert to JSON.
  2. 2 Choose the delimiter and whether the first row is a header.
  3. 3 Turn on minified JSON if you need a compact result.
  4. 4 Copy the converted JSON output.

Common use cases

  • Convert spreadsheet CSV to JSON arrays
  • Create object lists from header rows
  • Copy converted CSV to JSON output

Frequently asked questions

Which CSV delimiters can I use?

You can choose comma, tab, semicolon, or pipe delimiters, and the parser also handles quoted fields and escaped quotes.

Can the first row become JSON keys?

Yes. With the header-row option enabled, the first row becomes keys for an array of objects; without it, the result is an array of arrays.

Can I copy the result directly?

Yes. Review the converted JSON in pretty or minified form, then use the copy button to take it.

Related workflow

CSV to JSONTurn CSV from spreadsheets or logs into JSON that is easier to use in API examples or configuration. → cURL ConverterMove a cURL command into fetch code when the cleaned JSON needs to sit inside a request example. → JSON to CSVConvert the JSON back to CSV when you need a table-shaped review or handoff.