kotlin-stdlib / kotlin.time / seconds seconds Common JVM JS Native 1.3 @ExperimentalTime val Int.seconds: Duration Returns a Duration equal to this Int number of seconds. Common JVM JS Native 1.3 @ExperimentalTime val Long.seconds: Duration Returns a Duration equal to this Long number of seconds. Common JVM JS Native 1.3 @ExperimentalTime val Double.seconds: Duration Returns a Duration equal to this Double number of seconds.