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CSV to JSON

Convert CSV rows into a JSON array of objects, using the header row as keys.

About CSV to JSON

CSV to JSON is a free online tool that convert CSV rows into a JSON array of objects, using the header row as keys.

Everything runs in your browser, so the input never leaves your device. There is no account, no daily quota and no watermark on the result.

How to use CSV to JSON

  1. 1

    Paste your input

    Everything runs locally in the browser; nothing is uploaded.

  2. 2

    Adjust options

    Formatting, encoding and validation options appear above the editor.

  3. 3

    Copy the output

    Copy to clipboard or download the result as a file.

Questions about CSV to JSON

Is CSV to JSON free to use?

Yes. CSV to JSON is free with no account required and no watermark on the output. There is no paid tier hiding the download button.

What input does CSV to JSON accept?

Paste or type your input directly into the page — CSV to JSON has no file upload step.

Are my files uploaded to a server?

No. This tool runs entirely in your browser, so the input never leaves your device.

What is the output of CSV to JSON?

The result is shown on the page and can be copied or downloaded as a text file.

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Last updated November 2026. Files are processed on FilePlume's own hardware and deleted within 60 minutes; nothing is used for training. Also called: csv to json. Part of the FilePlume dev collection.