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Program to Convert Km/hr to miles/hr and vice versa
  • Last Updated : 11 May, 2018

Given a speed in km/hr, Convert it to m/hr and m/hr to km/hr.

Examples:

Input : 150 (km/hr)
Output : 93.21 
 
Input : 100 (m/hr)
Output : 160.92693917

The conversion formula for kph to mph is –

1 kilo-metre = 0.621371192 miles

The conversion formula for mph to kph is –

1 miles = 1.60934 kilo-metre

C++

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// Cpp program for conversion of 
// kmph to mph and vice versa
#include <bits/stdc++.h>
using namespace std;
  
// Function to convert kmph to mph
double kmphTOmph(double kmph)
{
    return 0.6214 * kmph;
}
// Function to convert mph to kmph
double mphTOkmph(double mph)
{
    return mph * 1.60934;
}
  
// Driver code to check the above function
int main()
{
    double kmph = 150;
    double mph = 100;
    cout << "the speed in mph is " << kmphTOmph(kmph) << endl;
    cout << "the speed in kmph is " << mphTOkmph(mph);
  
    return 0;
}

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Java

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// Java program for the conversion
// kmph to mph and vice versa
import java.io.*;
class GFG {
  
    // Function to convert kmph to mph
    static double kmphTOmph(double kmph)
    {
        return 0.6214 * kmph;
    }
  
    // Function to convert mph to kmph
    static double mphTOkmph(double mph)
    {
        return mph * 1.60934;
    }
    // Driver code to check the above function
    public static void main(String[] args)
    {
        double kmph = 150;
        double mph = 100;
        System.out.println("speed in miles/hr is " + kmphTOmph(kmph));
        System.out.println("speed in km/hr is " + mphTOkmph(mph));
    }
}

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Python

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# Python program for the conversion
# kmph to mph and vice versa
  
# Function to convert kmph to mph
def kmphTOmph(kmph):
    mph = 0.6214 * kmph
    return mph 
  
# Function to convert mph to kmph    
def mphTOkmph(mph):
    kmph =(float)(mph * 1.60934)
    return kmph
  
  
kmph = 150 
mph = 100
print "speed in miles / hr is ", kmphTOmph(kmph) 
  
print "speed in km / hr is ", mphTOkmph(mph) 

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C#

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// C# program for the conversion
// kmph to mph and vice versa
using System;
  
class GFG {
  
    // Function to convert kmph to mph
    static double kmphTOmph(double kmph)
    {
        return 0.6214 * kmph;
    }
  
    // Function to convert mph to kmph
    static double mphTOkmph(double mph)
    {
        return mph * 1.60934;
    }
  
    // Driver code to check the above function
    public static void Main()
    {
        double kmph = 150;
        double mph = 100;
        Console.WriteLine("speed in miles/hr is " + kmphTOmph(kmph));
        Console.WriteLine("speed in km/hr is " + mphTOkmph(mph));
    }
}
  
// This code is contributed by vt_m

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PHP

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<?php
// PHP program for conversion of 
// kmph to mph and vice versa
  
// Function to convert 
// kmph to mph
function kmphTOmph($kmph)
{
    return 0.6214 * $kmph;
}
  
// Function to convert
// mph to kmph
function mphTOkmph($mph)
{
    return $mph * 1.60934;
}
  
    // Driver Code
    $kmph = 150;
    $mph = 100;
    echo "speed in mph is " ,
          kmphTOmph($kmph),"\n";
    echo "speed in kmph is "
               mphTOkmph($mph);
  
// This code is contributed by anuj_67.
?>

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Output:

speed in miles/hr is  93.21
speed in km/hr is  160.934

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