Back to Home
Published: June 2026•By Web Util Slyce Team•6 min read
CSV to JSON — How to Convert CSV Data
Learn how CSV data maps to JSON format with practical examples. Convert CSV files instantly with our CSV to JSON Converter.
Basic CSV to JSON Mapping
CSV headers become JSON keys, rows become objects in an array.
CSV Input
name,email,age John,john@example.com,30 Jane,jane@example.com,28
JSON Output
[
{
"name": "John",
"email": "john@example.com",
"age": 30
},
{
"name": "Jane",
"email": "jane@example.com",
"age": 28
}
]Handling Quoted Fields
CSV values containing commas, newlines, or quotes must be quoted.
CSV Input
id,description 1,"Item with, comma" 2,"Multi-line description"
JSON Output
[
{
"id": 1,
"description": "Item with, comma"
},
{
"id": 2,
"description": "Multi-line\ndescription"
}
]Type Inference
| CSV Value | JSON Type | Notes |
|---|---|---|
| "hello" | "hello" (string) | Quoted values are always strings |
| 42 | 42 (number) | Unquoted numeric becomes number |
| 3.14 | 3.14 (number) | Floats are preserved |
| true | true (boolean) | Lowercase true/false |
| NULL | null | Case-insensitive null |
| "42" | "42" (string) | Quoted numbers stay strings |
| 2026-01-01 | "2026-01-01" (string) | Dates stay as strings (no auto-date) |