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CSV ↔ JSON Converter

Convert between CSV and JSON with auto-delimiter detection and proper escaping

CSV ↔ JSON Converter

Delimiter:

5 rows, 4 columns converted

Rows: 5Columns: 4Detected delimiter: Comma (,)
CSV input231 chars
JSON output537 chars
[
  {
    "name": "Alice",
    "age": "30",
    "city": "New York",
    "bio": "Software engineer, full-stack"
  },
  {
    "name": "Bob",
    "age": "25",
    "city": "San Francisco",
    "bio": "Loves \"coding\" and hiking"
  },
  {
    "name": "Charlie",
    "age": "35",
    "city": "London",
    "bio": "Multi-line\nbio entry here"
  },
  {
    "name": "Diana",
    "age": "28",
    "city": "Berlin",
    "bio": "Designer"
  },
  {
    "name": "Eve \"the Great\"",
    "age": "42",
    "city": "Tokyo",
    "bio": "Researcher"
  }
]

Updated . Provided as is. Check the output before you rely on it in production.

How to use CSV ↔ JSON Converter

  1. 1

    Paste CSV or JSON

    Pick the direction, then paste CSV with headers in the first row, or a JSON array. Quoted fields with commas or newlines are handled.

  2. 2

    Set parsing options

    Choose the delimiter or leave it on auto-detect (comma, semicolon, tab or pipe), and say whether the first row holds headers.

  3. 3

    Convert

    With headers you get a JSON array of objects; without, an array of arrays. Turn on Pretty JSON for readable output.

  4. 4

    Copy or download

    Copy or download the result for API imports, database seeding or spreadsheets.

Questions and answers

What is CSV to JSON Converter?
CSV stores a table as delimited text lines; JSON stores the same rows as objects or arrays. This converter goes both ways, detects comma, semicolon, tab or pipe delimiters, handles quoted fields with embedded commas and newlines, and writes nested JSON values into CSV cells as JSON text.
Does it handle special characters and quoted fields?
Yes. The converter properly handles quoted fields, embedded commas, newlines within quotes, and special characters. It also auto-detects common delimiters like commas, tabs, semicolons, and pipes.

Use it as an API

CSV ↔ JSON Converter is also callable as a free HTTP JSON API at https://aidevhub.io/api/csv-json/ — GET with query parameters or POST with a JSON body, no authentication, CORS enabled, fair use (abusive traffic is throttled at the edge; there is no per-request quota header). Responses return { ok, tool, result, meta }. 

curl -s -X POST https://aidevhub.io/api/csv-json/ \
  -H "Content-Type: application/json" \
  -d '{"input":"name,age\nAlice,30\nBob,41","direction":"csv_to_json"}'

Machine-readable contract: /api/tool/csv-json.json All API endpoints: /agents/ LLM site index: /llms.txt

For AI agents: how to call this tool

Machine-readable contract, endpoints and examples. Humans can ignore this section.

Best Path For Builders

Dedicated API endpoint

Deterministic outputs, machine-safe contracts, and production-ready examples.

Dedicated API

https://aidevhub.io/api/csv-json/

OpenAPI: https://aidevhub.io/api/openapi.yaml

GET /api/csv-json/ GET csv-json
POST /api/csv-json/ POST csv-json