Write a C program to input temperature in degree Fahrenheit and convert it to degree Centigrade. How to convert temperature from Fahrenheit to Celsius in C programming. C program for temperature conversion. Logic to convert temperature from Fahrenheit to Celsius in C program.
Input
Temperature in fahrenheit = 205
Output
Temperature in celsius = 96.11 C
Required knowledge
Arithmetic operators, Variables and expressions, Data types, Data types
Temperature conversion formula
Formula to convert temperature from degree Fahrenheit to degree Celsius is given by –

Logic to convert temperature from Fahrenheit to Celsius
Step by step descriptive logic to convert temperature from degree Fahrenheit to degree Celsius –
- Input temperature in fahrenheit from user. Store it in some variable say fahrenheit.
- Apply the temperature conversion formula
celsius = (fahrenheit - 32) * 5 / 9. - Print the value of celsius.
Read more – Program to convert temperature from Celsius to Fahrenheit
Program to convert temperature from fahrenheit to celsius
/** * C program to convert temperature from degree fahrenheit to celsius */ #include <stdio.h> int main() { float celsius, fahrenheit; /* Input temperature in fahrenheit */ printf("Enter temperature in Fahrenheit: "); scanf("%f", &fahrenheit); /* Fahrenheit to celsius conversion formula */ celsius = (fahrenheit - 32) * 5 / 9; /* Print the value of celsius */ printf("%.2f Fahrenheit = %.2f Celsius", fahrenheit, celsius); return 0; }%.2f is used to print fractional values only up to two decimal places. You can also use %f to print fractional values normally up to six decimal places.
Output
Enter temperature in Fahrenheit: 205 205.00 Fahrenheit = 96.11 Celsius
Happy coding 😉