Program to Convert Fahrenheit into Celsius

Temperature is often measured in different units, and Fahrenheit and Celsius are two commonly used scales. Converting temperatures between these scales is a common task in programming. In this article, we will explore the logic and methods to convert Fahrenheit into Celsius using a programming language.

Formula To Convert Fahrenheit Into Celsius

The Fahrenheit to Celsius conversion formula is:

This formula is based on the relationship between the Fahrenheit and Celsius scales. To convert a temperature from Fahrenheit to Celsius, subtract 32 from the Fahrenheit temperature, then multiply the result by 5/9.

Program To Convert Fahrenheit Into Celsius

Below, are the methods Program To Convert Fahrenheit Into Celsius in Python.

• Direct Calculation
• Using Lambda Function
• Using a Conversion Class

Convert Fahrenheit Into Celsius Using Direct Calculation

In this example, the code defines a function `farenheit_to_celcius` that converts a given Fahrenheit temperature to Celsius and prints the result. It then sets a Fahrenheit temperature to 40 and calls the function, displaying the converted Celsius temperature.

Python3

def farenheit_to_celcius(num):
    celcius = (farenheit - 32) * 5 / 9
    print("Temperature in Celsius:", round(celcius,3))


farenheit = 40
farenheit_to_celcius(farenheit)

Output

Temperature in Celsius: 4.444

Convert Fahrenheit Into Celsius Using Lambda Function

In this example, below code utilizes a lambda function to convert Fahrenheit to Celsius. It assigns the lambda function to `fahrenheit_to_celsius`, which takes a Fahrenheit temperature as input and returns the corresponding Celsius value. The code then sets a Fahrenheit temperature to 40, calculates and stores its Celsius equivalent.

Python3

# using lambda function
fahrenheit_to_celsius = lambda fahrenheit: (fahrenheit - 32) * 0.5556

fahrenheit = 40
celsius = fahrenheit_to_celsius(fahrenheit)
print("Temperature in Celsius:", celsius)

Output

Temperature in Celsius: 4.4448

Convert Fahrenheit Into Celsius Using a Conversion Class

In this example, below code defines a `TemperatureConverter` class with an `__init__` method to initialize the Fahrenheit temperature. The class has a `convert_to_celsius` method, which calculates and returns the Celsius equivalent. In the example usage, a temperature of 75.5 Fahrenheit is converted using an instance of the class.

Python3

class TemperatureConverter:
    def __init__(self, fahrenheit):
        self.fahrenheit = fahrenheit

    def convert_to_celsius(self):
        celsius = (self.fahrenheit - 32) * 5/9
        return celsius

# Example Usage
temperature_f = 75.5
converter = TemperatureConverter(temperature_f)
result = converter.convert_to_celsius()
print(f"{temperature_f} degrees Fahrenheit is equal to {result:.2f} degrees Celsius.")

Output

75.5 degrees Fahrenheit is equal to 24.17 degrees Celsius.

Conclusion

Creating a program to convert Fahrenheit to Celsius in Python is a simple yet useful task. The conversion formula is straightforward and can be implemented using various methods. In this article, we demonstrated three different approaches: direct calculation, a function with user input, and a class-based implementation. Choose the method that best suits your application or coding style.