CSV to JSON

Convert CSV data to JSON arrays with auto-detection, quoted field support, file upload, and type inference.

📋 CSV to JSON

Convert CSV data into JSON arrays with auto-detection and quoted field support

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Paste CSV data above or upload a file, then click "Convert"

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What is a CSV to JSON Converter?

A CSV to JSON converter is a tool that transforms comma-separated values (CSV) data into JSON format: the standard data format for web APIs, JavaScript applications, and modern databases. CSV files from spreadsheets, databases, and legacy systems often need to be converted to JSON for use in web applications and APIs.

CodeHelper's CSV to JSON Converter auto-detects the delimiter (comma, semicolon, or tab), handles quoted fields with embedded commas and newlines, infers data types (numbers, booleans, null), and supports direct file upload.

Key Features

  • Auto-Detect Delimiter: Automatically identifies whether your CSV uses commas, semicolons, or tabs.
  • Quoted Field Support: Correctly parses fields wrapped in quotes, including escaped quotes and embedded delimiters.
  • Type Inference: Converts numeric strings to numbers, "true"/"false" to booleans, and empty values to null.
  • File Upload: Upload .csv files directly from your computer.
  • Download JSON: Export the converted data as a .json file.

How to use the CSV to JSON Converter

  1. Paste your CSV data or upload a .csv file.
  2. Configure delimiter and header options.
  3. Click Convert to generate the JSON output.
  4. Copy or download the result.

Whether you are importing spreadsheet data into a web app, consuming legacy data exports, or building data pipelines, this free CSV to JSON converter handles all the edge cases of CSV parsing.