Free Online CSV to JSON Converter

Paste CSV data and get formatted JSON output instantly. Auto-detects headers, commas, tabs, and semicolons.

CSV Input
Paste CSV above
JSON Output

How to Use This CSV to JSON Converter

Paste your CSV data above and click Convert. The first row is used as JSON keys. Supports comma, tab, and semicolon delimiters.

Does it auto-detect delimiters?

Yes. The converter checks for tabs, semicolons, and commas in that order, using whichever appears most frequently in the first line.

What if my CSV has no headers?

The first row is always treated as headers. If your data has no headers, you can add a header row manually before converting.

Can I download the result?

Yes. Click the Download button to save the JSON output as a .json file.

Is my data stored?

No. All conversion runs locally in your browser. Nothing is sent to any server.