Snow Sports Tools
Tools for skiers and snowboarders, built on published reference data — the ISO release-value chart your bindings are set from, the slope angles where avalanches actually happen, and the National Weather Service wind chill formula applied to the coldest fifteen minutes of any ski day.
Edge bevels by discipline, wax by snow temperature, and base structure — with a cross-section of what the angles mean.
Beacon Check & Companion Rescue TimerThe trailhead beacon check, a phase-by-phase rescue drill timer, and the survival curve you are racing.
Vertical Feet & Ski Day TrackerLog ski days and see your season vertical measured against Everest, Mont Blanc and a few other reference points.
Snowboard Stance & Overhang SetupStance width, binding angles and setback drawn to scale, plus whether your boots will cause toe or heel drag.
Goggle Lens VLT PickerWhich lens tint and light transmission for the conditions you expect — including the polarised trade-off most guides leave out.
Ski Season Pass Break-Even CalculatorHow many days a season pass takes to pay for itself, charted against day tickets — including the costs that decide it either way.
Ski & Snowboard Size CalculatorSki length from height, ability, weight and terrain — and board length from weight, which is what actually matters for a snowboard.
Ski Boot Size & Flex GuideMondopoint from your foot length, converted to US, UK and EU — plus the flex and last width that actually decide fit.
Cross-Country Ski & Pole SizerClassic and skate pole sizing from your height, drawn to scale — plus why ski camber matters more than pole length.
Snowshoe Size CalculatorSnowshoe size from your total load and the snow you expect — and why bigger is not automatically better.
Ski Binding DIN Setting CalculatorThe ISO 11088 release-value chart, worked step by step — so you can sanity-check what the shop set, not set it yourself.
Avalanche Slope Angle & Danger GuideWhy 30 to 45 degrees is the slab range, how far debris really runs out, and why Considerable kills the most people.
Chairlift Wind Chill CalculatorThe National Weather Service wind chill formula plus the wind a moving lift makes itself, with frostbite exposure times.
About these snow sports tools
Slope angle is the single most useful number in avalanche terrain, and the dangerous band is narrower than people assume. Slab avalanches release overwhelmingly on slopes between 30 and 45 degrees, with the peak around 38. Below about 30 degrees a slab rarely has enough gravity component to overcome its own strength; above roughly 50, snow tends to sluff away continuously rather than accumulating into a slab in the first place. So the terrain that feels most inviting to ski — steep enough to be fun, not so steep as to be frightening — is precisely the terrain that slides. An inclinometer costs almost nothing and answers the question that eyeballing gets wrong, since people routinely underestimate a slope by five to ten degrees, which is most of the width of the band. The second thing worth knowing is that you can trigger a slope you are not standing on. Slabs propagate, so a person on flat ground below or on a low-angle bench can collapse a weak layer that fails upslope and brings the whole thing down on them. Terrain traps matter for the same reason — a small slide that would be survivable in the open is lethal if it funnels into a gully or piles up behind a terrain feature. The third is that cold snow is slower, not faster. Ski glide depends on a microscopically thin water layer generated by friction, and below roughly minus ten degrees that layer barely forms, so very cold days feel sticky no matter what wax is on the base.