CSV ↔ JSON Converter Online

Convert CSV spreadsheets to JSON arrays or convert JSON data to CSV files in real-time. Supports custom delimiters, headers, and instant file downloads.

Delimiter:

Header RowPretty Print

Input CSV Data

Converted JSON

[
  {
    "id": 1,
    "name": "Alice",
    "role": "Engineer",
    "country": "USA"
  },
  {
    "id": 2,
    "name": "Bob",
    "role": "Designer",
    "country": "UK"
  },
  {
    "id": 3,
    "name": "Charlie",
    "role": "Product Manager",
    "country": "Canada"
  }
]

Data Table Preview (3 rows)

id	name	role	country
1	Alice	Engineer	USA
2	Bob	Designer	UK
3	Charlie	Product Manager	Canada

Overview

What this tool does

Convert CSV spreadsheets to JSON objects or transform JSON arrays into CSV files with custom delimiters.

100% private in-browser processing. Zero cloud uploads.

Tutorial

How to use it

1Select your conversion mode (CSV → JSON or JSON → CSV).
2Paste your raw data or choose delimiter settings (comma, tab, semicolon).
3Preview the data in the table below, then copy or download your converted file.

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Did you know?

We process your documents privately in local sandbox storage. Your actual data remains in your browser tab. We never log, view, or store file contents.