"Libertarianism (Latin: liber, "free") is a political philosophy that upholds liberty as its principal objective. Libertarians seek to maximize autonomy and freedom of choice, emphasizing political freedom, voluntary association, and the primacy of individual judgment."
"Conservatism (or conservativism) is any political philosophy that favours tradition (in the sense of various religious, cultural, or nationally-defined beliefs and customs) in the face of external forces for change, and is critical of proposals for radical social change."
They can be similar, but not close enough to be called the same. A large example being same love marriage. Conservatism dictates that this should be illegal but libertarianism is to provide freedom of choice. This is an obvious conflict between the 2.