C Program to Convert Kelvin to Celsius

In this post, we will learn how to convert temperature from Kelvin to degree Celsius using the C Programming language.

Kelvin and Celsius are two temperature scales used to measure the temperature of an object.

The below program asks the user to enter the temperature in Kelvin, then it converts the temperature to degree Celsius using the conversion factor: 1 Kelvin = -272.15 degree Celsius

So, without further ado, let’s begin this tutorial.  

C Program to Convert Kelvin to Celsius

// C Program to Convert Kelvin to Celsius
#include <stdio.h>
int main(){
    float kel, cel;
    
    // Taking input
    printf("Enter the temperature in Kelvin: ");
    scanf("%f", &kel);
    
    // Kelvin to celsius conversion
    cel = kel - 273.15;
    
    // Displaying output
    printf("%.2f Kelvin = %.2f Celsius", kel, cel);
    
    return 0;
}

Output

Enter the temperature in Kelvin: 346
346.00 Kelvin = 72.85 Celsius

How Does This Program Work?

    float kel, cel;

In the above program, we have declared two floating data type variables named kel and cel.

    // Taking input
    printf("Enter the temperature in Kelvin: ");
    scanf("%f", &kel);

Then, the user is asked to enter the temperature in Kelvin. 

    // Kelvin to celsius conversion
    cel = kel - 273.15;

We convert the temperature from Kelvin to degree Celsius using the conversion factor: 1 Kelvin = -272.15 degree Celsius.

    // Displaying output
    printf("%.2f Kelvin = %.2f Celsius", kel, cel);

The equivalent temperature in degree Celsius is printed on the screen using the printf() function.

Conclusion

I hope after going through this post, you understand how to convert temperature from Kelvin to degree Celsius using the C Programming language.

If you have any doubts regarding the tutorial, then contact us in the comment section. We will be delighted to assist you.