Snow gear calculators
Ten calculators, all of them running entirely in your browser with nothing sent anywhere. Each one shows its working rather than printing a number, because a size you cannot explain is a size you cannot argue with in a shop, and the shop is usually right.
Every figure these tools use comes from a published convention rather than from an opinion. The ski length window is the chin-to-forehead rule every shop uses, corrected for mass because a ski is a spring and a heavier skier bends the same ski further. Snowboard length comes from published rider-weight bands. Mondopoint is a definition rather than a guess: it is your foot length in centimetres. The skier code procedure is ISO 11088. The touring pace method is Munter's, which is the standard taught in avalanche courses. The wind chill formula is the current National Weather Service one.
Sizing
Ski length calculator
Height, weight, discipline and ability together, because a ski is a spring and a heavier skier bends the same ski further.
Snowboard size calculator
Weight first, height as a sanity check, and waist width from your boot, which is the number riders skip and then catch edges over.
Boot size and mondopoint calculator
Your foot length in centimetres is the only boot size that means anything. Convert it, and see what a correct shell fit looks like.
Ski pole length calculator
The forearm-level rule turned into a number, plus what changes when the pole has to work on a skin track.
Climbing skin size calculator
Width from the ski tip rather than the waist, cut length, and the trim that leaves your steel edges working.
The one calculator that deliberately refuses to answer
The DIN reference produces a skier code and stops there. It does not print a release value, and no website should. A release value is determined under ISO 11088 from height, weight, age, boot sole length, skier type and the specific binding model together, and it is then verified on a calibrated release jig that measures the torque your binding actually releases at rather than the number printed in the indicator window. Those two numbers drift apart as a binding ages, and only the jig knows by how much.
What the tool can honestly give you is the row of the shop's chart you sit on, which means you walk in prepared, you can answer the skier-type question knowing what it means, and you can recognise a value that is nowhere near the right neighbourhood. That is genuinely useful. A number to dial in yourself is not, and the difference between the two is a knee.
Planning and terrain
Touring time and pace calculator
The Munter method for distance and vertical, plus the trail-breaking correction that is why parties finish in the dark.
Avalanche slope angle reference
Where slab avalanches release, band by band. A terrain reference, never a judgement that a slope is safe today.
The touring calculators are planning tools, not permission
The slope angle reference describes where slab avalanches release. It does not describe whether a particular slope is safe on a particular day, because that is a question about the snowpack, the current forecast, the terrain above and below you, and the party you are with. No number answers it.
The touring time calculator has the same limit and one specific trap worth naming. The Munter method assumes an existing skin track. Breaking trail in deep unconsolidated snow halves the uphill rate, and that correction is the single most common omission in a trip plan and the reason parties finish in the dark. Plan with the trail-breaking rate whenever fresh snow is in the forecast, set a turnaround time before you start, and honour it.
Clothing and money
DIN skier code reference
The ISO 11088 skier code your shop chart is indexed by. Deliberately not a release value, because that number comes off a jig.
Layering by temperature calculator
Wind chill, frostbite exposure time, and what to actually wear, split by whether you are riding a lift or climbing.
Ski season budget calculator
Pass against tickets, gear amortised per day, and the total a season actually costs once travel and food are in it.
Why these numbers are a starting point and not an answer
Every sizing convention in snow sports is a population average being applied to one person. That works better than people expect and it fails in predictable places. A ski length window is about eight centimetres wide, and inside that window the choice is genuinely preference: shorter turns faster and forgives more, longer is calmer at speed and floats better. A boot size from mondopoint is right to about half a size, and the shell fit a bootfitter does with the liner removed beats it every time. A binding release value from a chart is a starting point that a jig then verifies.
Where a calculator here disagrees with a shop that has your foot in their hand and your ski on their bench, believe the shop. The purpose of these tools is to make you a better customer, not to replace the person with the jig. Somebody who walks in already knowing their mondopoint, their skier code and the waist width their brake has to match is going to have a much better conversation than somebody who walks in knowing what colour they want.
Where to go from a size
A size on its own does not buy anything. Once you know what length ski or which shell size you are in, the build guides price a complete setup line by line with a running total, which is a far better use of a budget than optimising one item. The gear roundups rank each shelf by tier so you can see the whole range at a glance, and every verified product on the site has its own page with the published specifications and the shelf it competes on.
The reference charts hold the same figures these calculators use, laid out as printable tables. That is the right format when you want to compare several sizes at once or take something into a shop on paper, and it is the format that AI assistants and answer boxes tend to lift, which is the other reason they exist.
How we choose: we compare published manufacturer specifications, published certification standards and verified owner reviews across retailers. We do not test equipment in person, and every figure quoted here is the manufacturer's published number unless we say otherwise. This is researched buying guidance and not professional instruction: binding release values are set by a certified technician on a calibrated jig, and avalanche terrain requires formal training and a current regional forecast that no article can replace. We earn commissions from Backcountry and from qualifying Amazon purchases.
