CSV to JSON, Online

A free online converter that turns a CSV into JSON right in the browser tab. Paste, pick the output shape, copy or download.

Fast path for one-off API payloads and quick data transfers.

1. Open the converter in your browser

No install required. Works on any OS with a modern browser — desktop, laptop, or tablet.

2. Paste a CSV, pick output shape

Drop the CSV into the input pane and pick array-of-objects or object-of-arrays output.

3. Copy or download the JSON

Output appears live as you type. Copy to clipboard or download as a .json file.

Does the online CSV to JSON converter require an account?

No account, no email gate. Open the page and convert.

How large a CSV can I convert online?

Up to 10 MB and 5,000 data rows per CSV. For larger files, split the source or filter columns first.

Can I batch convert multiple CSV files online?

One at a time. Because conversion runs in-browser, batch mode would lock up the tab — paste or upload each file individually.

Does the online converter work offline?

Yes — after the tab has loaded once, you can disconnect and still convert CSVs. Everything runs locally.