Java Convert Number of Hours to Milliseconds

Tags: Java Duration Java 8

In this Java core tutorial, we learn how to convert a number of hours to milliseconds using the java.time.Duration class in Java programming language.

How to convert number of hours to milliseconds in Java

In Java, with a given number of hours we can use the Duration.toMillis() method to convert it to milliseconds value as the example Java code below.

ConvertHoursToMillisecondsExample.java 

import java.time.Duration;

public class ConvertHoursToMillisecondsExample {
    public static void main(String... args) {
        long numberOfHours = 4;

        // Convert Number of Hours to Milliseconds
        long numberOfMilliseconds = Duration.ofHours(numberOfHours).toMillis();

        System.out.println("Number of hours: " + numberOfHours);
        System.out.println("Number of milliseconds: " + numberOfMilliseconds);
    }
}
The output as below. 
Number of hours: 4
Number of milliseconds: 14400000

Happy Coding 😊

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