CSV to JSON Converter

Convert CSV data to JSON format. Handles quoted fields, auto-detects data types,...Convert CSV data to JSON format. Handles quoted fields, auto-detects data types, and supports multiple delimiters. All processing happens in your brow...

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Updated July 25, 2026

Delimiter

detected: comma

First row is headerInfer typesTrim spacesMinify output

CSV Input

JSON Output

[
  {
    "name": "Smith, John",
    "role": "Engineer",
    "note": "He said \"ship it\"",
    "salary": 92000
  },
  {
    "name": "Ada Lovelace",
    "role": "Analyst",
    "note": "First\nline break",
    "salary": 68000
  },
  {
    "name": "007",
    "role": "Agent",
    "note": null,
    "salary": "00777"
  }
]

Conversion Summary

Records

Fields

319

Characters

Quick answer

A CSV to JSON converter turns comma-separated rows into a JSON array of objects, using the header row as the keys. This tool parses your CSV entirely in your browser, so nothing is uploaded, and it correctly handles quoted fields that contain commas, escaped quotes, and line breaks. Turn on type inference to keep numbers and booleans as real JSON types, or turn it off to keep every value as text.

SSL Secured

256-bit Encryption

Cloud Processing

Mobile Friendly

Converter Features

Paste or Upload - Type CSV or load a .csv file

Auto Delimiter - Comma, semicolon, tab, or auto

Type Inference - Numbers, booleans, and nulls

Headerless Mode - Emit arrays when there is no header

Minify or Pretty - Compact or indented output

Copy or Download - Grab JSON or save a .json file

Why Use CSV to JSON Converter?

Instant Conversion

Convert CSV to JSON in real time as you type or paste. No waiting and no page reloads.

Handles Quoted Commas

A real parser keeps commas, line breaks, and escaped quotes inside quoted fields intact.

Auto Delimiter Detect

Detects comma, semicolon, or tab automatically, or pick one yourself for any CSV variant.

100% Private

Every conversion runs in your browser. Your CSV never leaves your device or hits a server.

Common Use Cases for CSV to JSON

API Development

Convert CSV exports to JSON format for use in REST APIs and web applications.

Data Migration

Transform spreadsheet exports into JSON for importing into NoSQL databases.

Frontend Development

Convert CSV data to JSON for use in JavaScript applications and frameworks.

Data Analysis

Prepare CSV data as JSON for use with charting libraries and visualization tools.

How It Works

Paste or Upload CSV

Paste your CSV into the box or click Upload .csv to load a file straight from your device.

Set Your Options

Pick a delimiter (or leave it on Auto), toggle the header row, type inference, and trimming.

Copy or Download JSON

The JSON array updates instantly. Copy it to your clipboard or download it as a .json file.

Tips for CSV Conversion

Check Your Delimiter

If the output looks wrong, try switching delimiters. European CSVs often use semicolons instead of commas.

Validate Before Using

Always preview the JSON output to ensure data types were detected correctly before using in production.

Quoted Fields

If your CSV contains commas within field values, make sure those fields are wrapped in double quotes.

Frequently Asked Questions

Paste your CSV into the input box or upload a .csv file. The tool reads the first row as the field names and turns every following row into a JSON object, giving you a JSON array of objects you can copy or download instantly.

Yes. The parser follows the CSV rules used by Excel and Google Sheets, so a value like "Smith, John" wrapped in double quotes stays as one field. Commas, line breaks, and doubled quotes inside a quoted field are all preserved.

Yes. Click Upload .csv to load a file from your device. The file is read locally in your browser and never sent to a server, and you can download the result as a .json file.

It is a list where each row of your CSV becomes an object, with the header cells as keys and the row cells as values. This is the shape most APIs, databases, and JavaScript apps expect.

Yes. Turn off First row is header and each row is emitted as a plain array of values instead of an object, so no data is treated as keys.

With Infer types on, values like 42 become numbers and true or false become booleans, while empty cells become null. IDs with leading zeros such as 007 stay as text so they are not corrupted. Turn the toggle off to keep every value as a string.

No. All parsing happens in your browser using JavaScript. Your CSV is never uploaded, which means it works offline and keeps sensitive data on your own machine.

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