RJB World Tools

CSV to JSON Converter

Upload a CSV, paste raw data, and convert it into clean JSON with delimiter detection, output controls, and instant download options.

CSV Input

Paste CSV, drag and drop a file, or choose one of the ready-made examples.

Drag and drop a CSV or TXT file here

Or use the file picker to load data from your device.

CSV is ready to convert.Loaded example

Conversion Options

Tune the parser for different CSV formats and output styles.

Examples

Pick a sample to see how different CSV structures convert to JSON.

JSON Output

Review the converted result, copy it, or download a file.

[
  {
    "name": "Ada Lovelace",
    "email": "ada@example.com",
    "active": true
  },
  {
    "name": "Grace Hopper",
    "email": "grace@example.com",
    "active": true
  },
  {
    "name": "Alan Turing",
    "email": "alan@example.com",
    "active": false
  }
]

Conversion Stats

Rows3
Columns3
JSON size269 B
Processing time0.78 ms
Characters122

File Information

FilenameSimple CSV
Input size122 B
DelimiterAuto detected
Header rowYes
ExamplesLoaded

Quick Actions

Use these shortcuts to keep the editor tidy while you work.

How to convert CSV to JSON

A fast workflow for clean, shareable structured data.

  1. Paste a CSV file into the editor or upload one from your device.
  2. Choose the right delimiter, quote character, and header settings.
  3. Click Convert, then copy or download the JSON result.

CSV vs JSON

When to use each format in real projects.

CSV is great for spreadsheets, exports, and simple tables. JSON is better for APIs, nested data, and systems that need structured records.

When to use CSV

Use CSV when you want a lightweight format that opens cleanly in Excel, Google Sheets, and most data tools. It is ideal for tabular exports and reporting.

When to use JSON

Use JSON when your data needs to travel between apps, APIs, and frontend code. It handles nested structures, arrays, and richer data types more naturally.

Why this converter is useful

CSV is still one of the most common formats for exports, spreadsheets, and bulk data imports. JSON is the format most apps and APIs expect. This tool bridges the two without forcing you to clean the data manually first.

What you can do here

  • Detect delimiters automatically or choose one manually.
  • Paste, edit, upload, and reformat CSV in one place.
  • Switch between array and object JSON output.
  • Copy or download your result without leaving the page.

FAQ

Is my data sent to a server?

No. Conversion happens locally in your browser.

Can I use semicolon-separated files?

Yes. Choose semicolon or let auto-detect handle it.

What JSON format is supported?

You can export arrays of objects or a keyed object view.