CSV to JSON Converter
Convert CSV to JSON online with header mapping and number/boolean casting. Download the result. Files stay in your browser.
CSV → JSON (2 rows)
Delimiter auto-detected. Numbers/booleans cast, empty cells → null.
Output
[
{
"name": "Ada",
"age": 36,
"city": "Jakarta"
},
{
"name": "Budi",
"age": 28,
"city": "Bandung"
}
]How to use
- Paste CSV; toggle First row is header.
- Check typed values (numbers, booleans, null for empty).
- Copy JSON or download.
FAQ
How are values typed?
Integers, decimals, true/false cast automatically; empty cells become null; the rest stay strings.
No header row?
Uncheck the header option — rows convert to plain arrays instead of objects.