Java Convert Number of Seconds to Nanoseconds

Tags: Java Duration Java 8

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

How to convert number of seconds to nanoseconds in Java

In Java, with a given number of seconds we can use the Duration.toNanos() method to convert it to nanoseconds value as the Java program below.

ConvertSecondsToNanosecondsExample.java 

import java.time.Duration;

public class ConvertSecondsToNanosecondsExample {
    public static void main(String... args) {
        long numberOfSeconds = 10;

        // Convert Number of Seconds to Nanoseconds
        long numberOfNanoseconds = Duration.ofSeconds(numberOfSeconds).toNanos();

        System.out.println("Number of seconds: " + numberOfSeconds);
        System.out.println("Number of nanoseconds: " + numberOfNanoseconds);
    }
}
The output as below. 
Number of seconds: 10
Number of nanoseconds: 10000000000

Happy Coding 😊

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