This language list is ranked based on how long it takes (in hour) to reach fluency as a native english speaker. English is not included in this list because each person could learn it with different durations based mainly on what their mother language is. So there is not a specific time that applies to everybody.
When it comes to the specific hours needed to reach fluency, using the Foreign Service Institute (FSI) difficulty rankings are essential. They rank languages based on difficulty and list the exact hours needed to learn them. Please keep in mind that this ranking only shows the view of the Foreign Service Institute (FSI) and some language students or experts may disagree with the ranking.
