Build a CSV to JSON Converter with Python

Level: Beginner

Your task for today is to create a CSV to JSON converter script that reads a CSV file and converts it to a formatted JSON file. This project introduces you to file format conversion and working with structured data. Use this CSV file here as a sample.

Project Task

Create a CSV to JSON converter that:

• Reads data from a CSV file

• Converts each row to a JSON object

• Handles headers as keys for JSON objects

• Writes formatted JSON output to a file

• Displays conversion statistics (rows converted, file sizes)

• Uses only Python’s built-in csv and json libraries

Bonus (optional):

• Handle different CSV delimiters (comma, semicolon, tab)

• Pretty-print JSON with indentation

• Convert multiple CSV files at once

• Add data type conversion (numbers, booleans)

This project gives you hands-on practice with file I/O, data format conversion, and working with CSV and JSON — essential skills for data processing and API development.

Expected Output

Here is how the input CSV data look like:

And here is the output JSON file generated by the program:

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