CSV ↔ JSON Converter

When to Convert CSV to JSON

Common scenarios for CSV → JSON conversion:

• API integration: Most modern APIs expect JSON, not CSV. Converting your spreadsheet data to JSON makes it ready for API calls.
• Web development: JavaScript natively works with JSON objects. Converting CSV data to JSON makes it immediately usable in frontend code.
• Database import: Many NoSQL databases (MongoDB, Firebase) accept JSON natively.

When to Convert JSON to CSV

Common scenarios for JSON → CSV conversion:

• Spreadsheet analysis: Need to analyze JSON API data in Excel or Google Sheets? Convert to CSV first.
• Reporting: CSV is the universal format for business reports and data exports.
• Legacy systems: Older systems and ETL pipelines often require CSV input.

How It Works

This tool uses PapaParse for CSV parsing (loaded on demand) with a built-in fallback for simple CSV. All conversion happens in your browser — no data is sent to any server.

CSV to JSON

name,age,city          →  [
Alice,30,NYC           →    {"name":"Alice","age":"30","city":"NYC"},
Bob,25,LA              →    {"name":"Bob","age":"25","city":"LA"}
                       →  ]

The first row is treated as headers (keys), subsequent rows become objects.

JSON to CSV

[{"name":"Alice",      →  name,age,city
  "age":30,            →  Alice,30,NYC
  "city":"NYC"}]       →  Bob,25,LA

Object keys become column headers, values become cells.