OfflineSafeTools

CSV ↔ JSON Converter — Tutorial

What are CSV and JSON?

CSV (Comma-Separated Values)

CSV is a simple text format for storing tabular data. Each line represents a row, and columns are separated by commas. The first row often contains column headers.

Example:

name,age,city
John,30,New York
Alice,25,San Francisco

JSON (JavaScript Object Notation)

JSON is a structured format for representing data as objects and arrays. It's widely used for APIs, configuration files, and data exchange between applications.

Example:

[
  {"name": "John", "age": 30, "city": "New York"},
  {"name": "Alice", "age": 25, "city": "San Francisco"}
]

When to use each format

Official documentation

How to use the CSV↔JSON Converter

  1. Select conversion mode — Choose CSV→JSON or JSON→CSV from the dropdown.
  2. Text input — Paste or type CSV or JSON, then click Convert to get the result.
  3. File input — Drop or select a file. The tool will read and convert the file contents locally.
  4. Output actions — Copy the result or download it as a text file.
  5. History — Last 5 conversions are stored locally. Use Clear history to remove them.

Open the tool: CSV ↔ JSON Converter

Privacy & limits

Troubleshooting

Common CSV parsing issues

JSON structure requirements

Best practices