Find the right ski length.
Ski length starts from your height and moves in both directions for three reasons. Ability comes first: a shorter ski turns more easily and forgives mistakes, which is why beginners are put on skis well below head height, while experts ride at or above it for stability at speed. Terrain shifts it again — carving skis are shorter for quick edge-to-edge changes, powder skis longer for float. Weight is the correction people forget: a skier heavier than average for their height needs a little more ski to hold an edge, because it is mass rather than stature that loads the sidecut.
Ski length
Length = height + ability offset + terrain offset + weight offset
Offsets
Ability: -14 beginner to +2 expert. Terrain: -4 piste, 0 all mountain, +6 powder
A general sizing guide only. Ski selection depends on specific ski construction, sidecut, rocker profile and binding setup, and mounting and DIN settings must be done by a qualified technician. Get fitted in person at a reputable shop, and never adjust bindings yourself — incorrect release settings are a significant injury risk.
A shorter ski has less edge in contact with the snow, so it needs less force to break free and initiate a turn, and it forgives an off-balance movement instead of dragging you along. The trade-off is stability at speed, which is exactly why the recommendation lengthens as ability improves.
Because a ski bends and holds its edge in response to load, not stature. Two skiers of the same height but 20 kg apart flex the same ski very differently — the heavier one will overpower a ski the lighter one finds perfect. If the two suggest different lengths, weight is the better guide.