---
title: Temperature Converter
description: 
published: true
date: 2025-06-28T01:36:15.092Z
tags: 
editor: markdown
dateCreated: 2025-06-28T01:36:15.092Z
---

# Python Programming Exercise: Temperature Converter

## Objective
Create a Python program that converts temperatures between Celsius, Fahrenheit, and Kelvin using functions. This exercise will help you practice defining and using functions, handling user input, and performing calculations.

## Instructions
Write a Python program that:
1. Defines three functions to handle temperature conversions:
   - `celsius_to_fahrenheit(celsius)`: Converts Celsius to Fahrenheit
   - `celsius_to_kelvin(celsius)`: Converts Celsius to Kelvin
   - `convert_temperature(value, unit)`: Takes a temperature value and unit (C, F, or K) and returns conversions to the other two units
2. Prompts the user to input a temperature value and its unit.
3. Validates the input to ensure it's a valid number and unit (C, F, or K).
4. Uses the `convert_temperature` function to perform the conversions and display the results.

## Requirements
- Use appropriate function parameters and return values.
- Handle invalid inputs (non-numeric values or incorrect units) with error messages.
- Round all output temperatures to 2 decimal places.
- Include a main function to organize the program flow.

## Conversion Formulas
- Celsius to Fahrenheit: °F = (°C × 9/5) + 32
- Celsius to Kelvin: K = °C + 273.15
- Fahrenheit to Celsius: °C = (°F - 32) × 5/9
- Kelvin to Celsius: °C = K - 273.15

## Example Output
```
Enter a temperature value: 25
Enter the unit (C, F, or K): C
25.00°C equals:
77.00°F
298.15K
```

## Tips
- Use `try`/`except` to handle invalid numeric inputs.
- Check if the unit is one of 'C', 'F', or 'K' (case-insensitive).
- Structure your program with a `main()` function that calls other functions.
- Test your program with different inputs, including edge cases like negative temperatures or invalid units.

## Challenge
Add an optional feature to allow the user to continue converting temperatures until they choose to quit.