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CSV to JSON

Convert CSV files or data to JSON format

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CSV to JSON converts spreadsheet-style CSV data into a JSON array of objects, using the header row as each object's keys — handy for feeding a spreadsheet export into an API, a script, or a NoSQL database.

Paste CSV data here (first row = headers)

How to use CSV to JSON

  1. 1

    Paste your CSV data, or upload a .csv file.

  2. 2

    The converter uses the first row as keys and builds a JSON array automatically.

  3. 3

    Review the generated JSON output.

  4. 4

    Copy the result or download it as a .json file.

Everything you need to know about converting CSV to JSON

What does this do?

Converts spreadsheet-style CSV rows and columns into a JSON array of objects, using the header row as each object's field names — the standard shape most APIs and JavaScript code expect data in.

When you actually need this

  • Feeding spreadsheet data into an API or script that expects JSON, not CSV.
  • Prototyping with real data exported from a spreadsheet tool.

Going the other direction

If you're starting from JSON and need a spreadsheet-friendly format instead, JSON to CSV does the reverse.

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Frequently Asked Questions

What if my CSV doesn't have a header row?

The converter expects the first row to be column headers, which become each object's keys — add a header row first if your data doesn't have one.

Does it handle commas inside quoted fields?

Yes — standard CSV quoting (commas or line breaks inside double-quoted fields) is parsed correctly, not just naive comma-splitting.

Can I convert the other direction too?

Yes — use JSON to CSV to flatten a JSON array of objects back into spreadsheet rows.

Is there a row limit?

No hard limit for typical exports; very large CSV files may take a little longer to process.

Does this tool send my data anywhere?

Yes — the CSV you provide is sent to our servers to be converted and the result is returned to you; we don't store the content itself.

Is this tool free to use?

Yes — completely free, with no signup required.