Java Program to Convert Kilometer Per Hour to Miles Per Hour

In the previous article we have discussed about Java Program to Convert Kilometer Per Hour to Meters Per Second

In this article we are going to see how to convert kilometer per hour to miles per hour by using Java programming language.

Java Program to Convert Kilometer Per Hour to Miles Per Hour

Kilometer and Mile both are used as a unit to measure length of long distance like road distance.

Before jumping into the program, first let’s know the relation between kilometer per hour and miles per hour.

1 Kilometer Per Hour = 0.621371 Miles Per Hour

Then the formula to convert kilometer per hour to miles per hour is

Miles Per Hour =  Kilometer Per Hour * 0.621371

Let’s see different ways to convert kilometer per hour to miles per hour.

By Using Static Input Value
By Using User Input Value
By Using User Defined Method

Method-1: Java Program to Convert Kilometer Per Hour to Miles Per Hour By Using Static Input Value

Approach:

Declare a double variable say ‘kilometerPerHour‘ and initialize it’s value.
Then convert kilometer per hour to miles per hour by using formula.
Print the result.

Program:

public class Main
{
    public static void main(String[] args) 
    {
        //declared value of kilometer per hour
        double kilometerPerHour=1;
        //converting kilometer per hour to miles per hour
        double milesPerHour=kilometerPerHour * 0.621371;
        //printing result
        System.out.println(kilometerPerHour+" kilometer per hour is equal to "+milesPerHour+" miles per hour");
    }
}

Output:

1.0 kilometer per hour is equal to 0.621371 miles per hour

Method-2: Java Program to Convert Kilometer Per Hour to Miles Per Hour By Using User Input Value

Approach:

Take the value of double variable ‘kilometerPerhour‘ as user input by using Scanner class.
Then convert kilometer per hour to miles per hour by using formula.
Print the result.

Program:

import java.util.*;

public class Main
{
    public static void main(String[] args) 
    {
        Scanner sc=new Scanner(System.in);
        System.out.print("Enter the value of kilometer per hour: ");
        //declared double variable kilometerPerHour 
        //and taking it's value as user input
        double kilometerPerHour=sc.nextDouble();
        //converting kilometer per hour to miles per hour
        double milesPerHour=kilometerPerHour * 0.621371;
        //printing result
        System.out.println(kilometerPerHour+" kilometer per hour is equal to "+milesPerHour+" miles per hour");
    }
}

Output:

Enter the value of kilometer per hour: 4
4.0 kilometer per hour is equal to 2.485484 miles per hour

Method-3: Java Program to Convert Kilometer Per Hour to Miles Per Hour By Using User Defined Method

Approach:

Take the value of double variable ‘kilometerPerHour‘ as user input by using Scanner class.
Then call a user defined method say convertValue() by passing kilometerPerHour value as parameter.
Inside method convert kilometer per hour to miles per hour by using formula.
Print the result.

Program:

import java.util.*;

public class Main
{
    public static void main(String[] args) 
    {
        Scanner sc=new Scanner(System.in);
        System.out.print("Enter the value of kilometer per hour: ");
        //declared double variable kilometerPerHour 
        //and taking it's value as user input
        double kilometerPerHour=sc.nextDouble();
        //calling user defined method converValue()
        convertValue(kilometerPerHour);
    }
    
    //convertValue() user defined method 
    public static void convertValue(double kilometerPerHour)
    {
         //converting kilometer per hour to miles per hour
        double milesPerHour=kilometerPerHour * 0.621371;
        //printing result
        System.out.println(kilometerPerHour+" kilometer per hour is equal to "+milesPerHour+" miles per hour");
    }
}

Output:

Enter the value of kilometer per hour: 10
10.0 kilometer per hour is equal to 6.21371 miles per hour

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