Free · Browser-only · No upload

CSV to JSON Converter Online

Use this csv to json converter to turn spreadsheets into a csv to json format array of objects. Convert csv to json online with header detection — a fast csv to json formatter for APIs and scripts. Need the reverse? See our JSON to CSV tool for convert json to csv workflows.

Delimiter

Quote character

First row is column headersPretty-print JSON

JSON objects3

Output size0.3 KB

CSV inputImport

JSON output

[
  {
    "id": "1",
    "name": "Jane Doe",
    "email": "jane@example.com",
    "active": "true"
  },
  {
    "id": "2",
    "name": "John Smith",
    "email": "john@example.com",
    "active": "false"
  },
  {
    "id": "3",
    "name": "Alex Lee",
    "email": "alex@example.com",
    "active": "true"
  }
]

Need convert json to csv? Use JSON to CSV →

CSV to JSON vs JSON to CSV

Csv to json online — spreadsheet to API

Excel and exports often arrive as CSV. A csv to json converter builds an array of objects your REST API or Node script expects — the core csv to json workflow.

Csv to json formatter — readable output

Toggle pretty-print for review, or minify for payloads. This csv to json formatter keeps column names from your header row so keys match the original sheet.

Already have JSON? Convert json to csv

For json to csv, convert json to csv, or convert json into csv for Excel, use our JSON to CSV converter — same privacy, opposite direction.

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Common questions

CSV to JSON FAQ

How do I convert CSV to JSON online?

Paste or import your CSV, choose delimiter and whether the first row is headers, then copy the JSON array. Each row becomes one object keyed by column names.

Do you also convert JSON to CSV?

Yes — use our separate JSON to CSV tool at /json-tools/json-to-csv-converter for convert json to csv, change json to csv, and Excel-friendly exports.

What delimiter should I use?

Comma is standard. Tab-separated (TSV) files work with the Tab preset. Semicolon is common in European Excel exports.

Are numbers converted to JSON numbers?

Values stay as strings to avoid locale issues (1.000 vs 1,000). You can post-process in your app if you need numeric types.

Is my CSV uploaded?

No. Parsing and conversion run entirely in your browser.

Why did conversion fail?

Often an unclosed quote, wrong delimiter, or empty file. Open the file in a text editor to confirm the separator matches your setting.

CSV to JSON Converter Online — Convert CSV to JSON