CSV to JSON

Convert CSV table data into JSON.

Runs locallyNo signupMobile readyCopyableFree

⊞CSV to JSON

All processing happens locally

Input

Delimiter

First row is header

Output

CSV to JSON is a CSV to JSON converter, conversion runs locally, so configs and API payloads with real business fields are never uploaded.

Paste the source data, press convert, then copy or download the result from the panel corner.

Paste or type your content into the input field at the top, or press the sample button to load demo data.
Adjust the options below the input, such as output format, separators, letter case or precision.
Press the main button to run the conversion. Results appear instantly in the output panel without a page reload.
When the result looks right, use the copy button in the corner, or download it as a local file.

Clean up stray spaces and line breaks before pasting for more accurate results.

Does it support tab separated data?+

Yes, choose comma, tab or semicolon as the delimiter.

Must the first row be headers?+

By default yes; untick to output a two-dimensional array instead.

Will non-ASCII text break?+

UTF-8 reads cleanly; if the source is legacy encoded, re-save it as UTF-8 first.

Is CSV to JSON free to use?+

Yes. The tool is completely free with no usage limits, and you never need an account or a sign-in.

Is the text I enter uploaded anywhere?+

No. All processing runs locally in your browser, so the input never reaches a server and is never logged or stored.

Does CSV to JSON work on a phone or tablet?+

Yes. The layout is mobile-first, so inputs and buttons stay comfortable on phones and tablets in both orientations.

Can I copy the result into my own document?+

Yes. A copy button in the output panel puts the result on your clipboard, and you can also download it as a text file.