Ski Size Calculator
Find the right ski length for your height, ability, and style.
Start with height
The classic rule sizes skis to land somewhere between your chin and the top of your head.
Ability and terrain shift it
A beginner sizes down for control; a powder skier sizes up for float.
How are skis sized?
Why one number isn't enough
Ski length is measured in centimetres, and the traditional starting point is your height: stand a ski up and it should reach somewhere between your chin and the top of your head. But height alone is only the anchor. As buying guides from retailers like evo and REI explain, your ability and the terrain you ski pull the ideal length shorter or longer — a beginner on groomed runs wants a shorter, more forgiving ski, while an expert in deep snow wants a longer one for stability and float.
The estimate scales your height by an ability factor, then nudges the result for your skiing style.
length (cm) = height (cm) × ability factor + style adjustmentThe ability factor runs from about 0.90 for beginners — skis that reach roughly the chin — up to 1.02 for experts, who ride skis at or just above their own height. The style adjustment then shifts the number a few centimetres: piste and carving skis come down about 5 cm for quicker, snappier turns, all-mountain skis stay neutral, and freeride or powder skis go up around 7 cm so they plane on top of deep snow. The result is given as a length with a sensible range, because skis come in fixed sizes and personal preference fills the gap.
You are 175 cm tall, ski at an intermediate level, and ride mostly all-mountain terrain.
Pick the ability factor
Intermediate corresponds to about 0.95 of your height.Scale your height
175 × 0.95 ≈ 166 cm.Apply the style adjustment
All-mountain adds nothing, so the recommendation stays 166 cm.Read the range
A sensible window is about 161–171 cm, covering quicker and more stable options.
The recommended number is a midpoint; where you land inside the range depends on how you like to ski.
Size down for control
Shorter skis turn faster and are easier to manage — better for learning, tight trees, and bumps.
Size up for stability
Longer skis are steadier at speed and float better in powder, at the cost of quickness.
Weight matters too
If you are heavier than average for your height, lean longer; lighter, lean shorter.
Ski shape also plays a part. A ski with lots of rocker (tip and tail that rise early) skis shorter than its number, so freeride skis are often sized up to compensate, while a fully cambered race ski skis closer to its measured length. Treat the recommendation as the centre of gravity and let terrain and shape pull you a few centimetres either way.
The recommended length is a best-fit centimetre figure for your height, ability, and style, and the range is the practical window most skiers like you choose within. Taller skiers and stronger, faster skiers move toward longer skis; beginners and those who prize quick turns move shorter. Because the number rests on rules of thumb, two skiers of the same height can happily ride lengths several centimetres apart. Use the result to narrow the rack to a few sizes, then weigh control against stability for the snow you ski most.
The maths is simple; the right ski is personal.
A guide, not a fitting
Ski sizing is a rule of thumb that varies between brands, models, and guides, so treat the output as a starting point rather than an exact answer. It does not account for ski shape and rocker, your weight, snow conditions, or how aggressively you actually ski. Manufacturers publish their own size charts for each model, and a good shop can fit you in person — check both before buying, especially for performance or powder skis where length matters most.