CSV to JSON
Convert CSV to JSON with header detection, automatic number and boolean detection, and support for quoted fields. Works with comma, semicolon, tab and pipe delimiters.
This tool runs entirely in your browser.
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How to use the CSV to JSON
- 1Paste CSV text.
- 2Choose the delimiter and whether the first row contains column names.
- 3Copy or download the JSON.
What is the CSV to JSON?
The parser follows RFC 4180: fields containing delimiters, quotes or line breaks must be wrapped in double quotes, and quotes inside are doubled ("").
Frequently asked questions
Can I keep numbers as strings?
Yes — turn off “Detect numbers & booleans”, useful for IDs with leading zeros or postcodes.
Is the CSV to JSON free and private?
Yes. The CSV to JSON is free, needs no account, and runs entirely in your browser. What you type is never sent to a server or stored.