There isn’t one golden rule to picking your ski size.
It depends on many factors, such as your height, weight and ability. It can also just come down to personal preference.
In general, when you stand your skis upright, the tip should be somewhere between your chin and the top of your head.
If you’re a complete beginner, you need shorter skis than someone who is vastly experienced. Short skis are slower in a straight line, easier to control at lower speeds and better for sharp turns – you’ll notice slalom skiers have much shorter skis than cross country skiers.
As a beginner, you’ll start off at the shorter end of the range for your height, while more advanced skiers will generally opt for longer skis, which are better for longer turns and offer more stability at higher speeds. If you weigh less than average for your height, you’ll want a shorter ski, while heavier skiers will need a longer ski usually.