C++ Program To Convert Fahrenheit To Celsius Last Updated : 23 Jul, 2025 Comments Improve Suggest changes Like Article Like Report Given a Temperature n in Fahrenheit scale convert it into Celsius scale. Examples: Input: 32 Output: 0 Input: -40 Output: -40 Formula for converting Fahrenheit scale to Celsius scale T(°C) = (T(°F) - 32) × 5/9 C++ // C++ program to convert Fahrenheit // scale to Celsius scale #include <bits/stdc++.h> using namespace std; // Function to convert Fahrenheit // to Celsius float Conversion(float n) { return (n - 32.0) * 5.0 / 9.0; } // Driver code int main() { float n = 40; cout << Conversion(n); return 0; } Output: 4.44444 Time Complexity: O(1) Auxiliary Space: O(1) Please refer complete article on Program For Fahrenheit to Celsius Conversion for more details! Create Quiz C++ Program To Convert Celsius to Fahrenheit & vice versa Comment K kartik Follow 0 Improve K kartik Follow 0 Improve Article Tags : C++ Programs C++ C Basic Programs Explore C++ BasicsIntroduction to C++3 min readData Types in C++6 min readVariables in C++4 min readOperators in C++9 min readBasic Input / Output in C++3 min readControl flow statements in Programming15+ min readLoops in C++7 min readFunctions in C++8 min readArrays in C++8 min readCore ConceptsPointers and References in C++5 min readnew and delete Operators in C++ For Dynamic Memory5 min readTemplates in C++8 min readStructures, Unions and Enumerations in C++3 min readException Handling in C++12 min readFile Handling in C++8 min readMultithreading in C++8 min readNamespace in C++5 min readOOP in C++Object Oriented Programming in C++8 min readInheritance in C++6 min readPolymorphism in C++5 min readEncapsulation in C++3 min readAbstraction in C++4 min readStandard Template Library(STL)Standard Template Library (STL) in C++3 min readContainers in C++ STL2 min readIterators in C++ STL10 min readC++ STL Algorithm Library3 min readPractice & ProblemsC++ Interview Questions and Answers1 min readC++ Programming Examples4 min read Like