57 chars · 3 lines
57 chars · 3 lines
3 rows3 columnsComma delimiter
57 chars · 3 lines
57 chars · 3 lines
CSV to JSON guide
Paste CSV into the converter above to parse the header row and turn each later record into a JSON object. Quoted delimiters remain inside their values, and empty or duplicate headers are rejected instead of producing ambiguous object keys. This tool is free to use. No account or payment is required.
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Each header becomes a property key and each subsequent record becomes an object. Cell values remain strings because CSV itself does not carry a reliable type system for booleans, dates, integers, identifiers, and leading-zero values.
Keeping values as strings avoids silently converting account numbers, ZIP codes, version labels, and other text that only looks numeric.
An empty header has no usable JSON key, while duplicate headers would overwrite earlier fields in an object. The converter rejects both cases so the generated records keep every source column explicit.
CSV parsing and JSON serialization run in the browser, which keeps source rows on the device while you prepare fixtures, scripts, or API data.
The header row becomes object keys and the comma inside the quoted note stays inside one JSON string value.
name,role,notes
Ada,admin,"API, data"
Linus,editor,Kernel[
{
"name": "Ada",
"role": "admin",
"notes": "API, data"
},
{
"name": "Linus",
"role": "editor",
"notes": "Kernel"
}
]Common questions
No. CSV cells are emitted as JSON strings so values such as leading-zero identifiers are not changed silently.
The conversion stops with an error because duplicate keys would make the resulting JSON objects ambiguous.
Yes. Properly quoted delimiters are parsed as part of the field value before JSON objects are created.
Debugging a specific CSV issue? Browse CSV troubleshooting.