Java Convert Number of Hours to Nanoseconds

Tags: Java Duration Java 8

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

How to convert number of hours to nanoseconds in Java

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

ConvertHoursToNanosecondsExample.java 

import java.time.Duration;

public class ConvertHoursToNanosecondsExample {
    public static void main(String... args) {
        long numberOfHours = 5;

        // Convert Number of Hours to Nanoseconds
        long numberOfNanoseconds = Duration.ofHours(numberOfHours).toNanos();

        System.out.println("Number of hours: " + numberOfHours);
        System.out.println("Number of nanoseconds: " + numberOfNanoseconds);
    }
}
The output as below. 
Number of hours: 5
Number of nanoseconds: 18000000000000

Happy Coding 😊

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