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CSV to JSON Converter

Convert CSV data to JSON objects or arrays directly in your browser.

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Fast CSV to JSON & JSON to CSV Converter

Data transformation made simple. Convert spreadsheet data (CSV) into structured JSON objects, or flatten JSON arrays back into CSV format for Excel. Our converter simplifies data migration tasks, handling custom delimiters, headers, and nested structures intelligently. It is an essential tool for developers moving data between legacy systems and modern web APIs.

How it Works

  • 1Paste your CSV or JSON data into the input field.
  • 2The tool detects the format and suggests a conversion direction.
  • 3Customize settings like separator type (comma, semicolon, tab).
  • 4Preview the converted data in real-time.
  • 5Download the result as a .json or .csv file.

Key Features

Bidirectional conversion (CSV ↔ JSON).
Automatic header detection.
Support for custom delimiters (tabs, pipes, semicolons).
Handles large datasets efficiently in the browser.
Option to minify JSON output.

Common Use Cases

Database Imports: Convert Excel sheets to JSON for MongoDB seeding.Reporting: Flatten JSON API responses into CSV for business analysts.Data Visualization: Prepare datasets for libraries like D3.js or Chart.js.Legacy Migration: Move data from older SQL exports to modern NoSQL stores.Quick Analysis: View JSON data in a spreadsheet format.

Frequently Asked Questions

Everything you need to know about using this tool effectively and securely.

Q.Can it handle nested JSON objects?

Yes, when converting JSON to CSV, nested objects are typically flattened using dot notation (e.g., `user.address.city`) to fit into a tabular format.

CSV to JSON Converter Online | Free & Fast | CleanTextLab