CSV ↔ JSON Converter

Sample Data

About CSV & JSON

CSV (Comma-Separated Values) is a simple format for tabular data, commonly used in spreadsheets and databases.

JSON (JavaScript Object Notation) is a flexible data format ideal for APIs and modern applications.

Features
  • Bidirectional conversion
  • Custom delimiters support
  • Header row detection
  • Number parsing option
  • File upload & download
  • Quoted field handling
Tips
  • For Excel, use semicolon delimiter
  • Quoted values preserve commas
  • Enable "Parse numbers" for numeric data
  • JSON array must contain objects

Online CSV to JSON Converter Tool

Convert CSV files to JSON format and vice versa with our free online tool. Perfect for data migration, API integration, and working with spreadsheet exports.

CSV to JSON Conversion Features

  • Automatic header detection and column mapping
  • Support for various delimiters (comma, semicolon, tab, pipe)
  • Handles quoted fields with embedded delimiters
  • Optional number parsing for numeric values
  • File upload support for large CSV files
  • Download converted JSON/CSV files

Common Use Cases

  • Export spreadsheet data to JSON for web applications
  • Convert API responses to CSV for analysis
  • Database import/export operations
  • Data transformation in ETL pipelines

CSV/JSON Questions

CSV = flat table, simple, works everywhere. JSON = structured, supports nesting, native to web APIs. Convert CSV→JSON when you need to use spreadsheet data in code.

When you've got an Excel export and need it in your API. Or when you need to turn JSON array data into something you can open in a spreadsheet.

Comma is standard. Semicolons for European formats. Tab for TSV. Pipes occasionally. Match whatever your source data uses.