CSV to JSON

Convert CSV to JSON online for free. Header-based mapping, quoted fields and type detection — instant conversion in your browser.

Detect numbers, booleans and null

CSV input (first row = header)

name,role,active,score
Ada Lovelace,admin,true,9.5
Grace Hopper,editor,true,8.0
Alan Turing,"viewer, guest",false,7.25

JSON output

[
  {
    "name": "Ada Lovelace",
    "role": "admin",
    "active": true,
    "score": 9.5
  },
  {
    "name": "Grace Hopper",
    "role": "editor",
    "active": true,
    "score": 8
  },
  {
    "name": "Alan Turing",
    "role": "viewer, guest",
    "active": false,
    "score": 7.25
  }
]

About CSV to JSON

Paste CSV data to convert it into a JSON array of objects using the header row as keys. Quoted fields, embedded commas and newlines are handled correctly.

Optionally detect numbers, booleans and null values as real JSON types, or keep every field as a string. Everything runs locally in your browser.