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CSV to JSON

Convert CSV data into structured JSON arrays.

About CSV to JSON

CSV to JSON is a free online tool. Convert CSV spreadsheet data into a JSON array of objects, using the header row as keys. It runs entirely in your browser, so there is nothing to install, no account to create and no watermark added to your result.

How to use CSV to JSON

  1. Paste your code or data into the input box.
  2. Choose an option or press the action button.
  3. Read the result, fix any reported error and copy the output.

Worked example

A CSV with header "name,age" and row "Ada,36" becomes [{"name":"Ada","age":"36"}].

Tips for best results

  • Make sure the first row contains clean header names without duplicates.
  • Everything runs in your browser, so you can use CSV to JSON even on a slow connection once the page has loaded.

Limits to keep in mind

  • The tool works on the text you paste and does not check it against a schema. Always test the output in your own project.

Frequently asked questions

Can I use this for production code?The tools follow common standards, but always test the output in your own project before deploying it.
Is CSV to JSON free?Yes. It is completely free with no signup, no watermark and no daily limit.
Do you store my files or text?No. Processing happens on your device in your browser, so your content is never uploaded to our servers.
Does it work on mobile?Yes. It works on current versions of Chrome, Safari, Firefox and Edge on phones, tablets and computers.

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