C Program to convert Fahrenheit to Celsius and Fahrenheit to Kelvin

C Programs / By

Temperature conversion

In this tutorial, we will study the conversion of temperature. We use a different unit of temperature conversions and we learn C Program to convert Fahrenheit to Celsius and Fahrenheit to Kelvin.

Different temperature units are Celsius, Fahrenheit, Kelvin. there is a different formula for converting these value to the specified unit. which are as follow :

Temperature conversion formula

1. Fahrenheit ( F ) :

 Celsius

the formula used for converting Fahrenheit to Celsius

(F-32) * 5/9;

 Kelvin  ( Fahrenheit to Kelvin formula )

the formula used for converting Fahrenheit to kelvin is as follow,

(F – 32) * 5/9 +273.15

2. Celsius ( C ) :

 Fahrenheit

a formula used for converting Celsius to Fahrenheit formula (c to f)

(C * 9/5)+32

 Kelvin

a formula used for converting celsius to kelvin formula

C + 273.15

3. Kelvin ( K ) :

 Fahrenheit : (kelvin to Fahrenheit formula)

a formula used for converting kelvin to Fahrenheit is as follow,

( K – 273.15 ) * 9/5 + 32

 Celsius : ( kelvin to Celsius conversion)

the formula used for converting kelvin to Celsius ( kelvin to celsius formula)

K – 273.15

we have all formulas to convert into specified unit now we will implement the program to perform these conversions.

C Program to convert Fahrenheit to Celsius and Fahrenheit to Kelvin

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778#include<stdio.h>void main(){int from ,to ;float value;printf(“temperature conversion \n”);printf(“Enter no of unit to convert from : \n 1.Celsius \n2.Fahrenheit \n 3. kelvin\n”);scanf(“%d”,&from);printf(“Enter no of unit to convert to : \n 1. Celsius \n2.Fahrenheit \n 3. kelvin\n”);scanf(“%d”,&to);printf(“Enter the value to convert:”);scanf(“%d”,&value);/* converting given value from specified unit to kelvin */switch(from){case 1:value=value + 273.15;break;case 2:value = (value + 459.67 )* 5/9;break;case 3:break;default:break;}/* Converting value from kelvin to specified value */switch(to){case 1:value=value + 273.15;break;case 2:value = (value) * 9/ 5-459.67;break;case 3:break;default:break;}printf(“converted value = %d “, value);}
Temperature conversion, Fahrenheit to Celsius and Fahrenheit to Kelvin
Fahrenheit to Celsius and Fahrenheit to Kelvin

Output :

Temperature conversion

Enter no of a unit to convert from :

  1. Celsius
  2. Fahrenheit
  3. kelvin

1

Enter no of a unit to convert from :

  1. Celsius
  2. Fahrenheit
  3. kelvin

2

Enter the value to convert :

40

Converted value = 103.999992

Fahrenheit to Celsius and Fahrenheit to Kelvin