Ski Length CalculatorKids Ski Length Calculator
Children's ski sizing follows its own published bands, stricter than the adult rules: the right ski stands between a child's chest and forehead depending on how they ski, and both of the charts behind this calculator say the same unfashionable thing — never buy length for a child to grow into.
Kids Ski Length Calculator
Children's skis are sized from published height bands — not from the adult chart, and never with 'room to grow'. Enter your child's height and weight and how they actually ski. For the same bands in grid form, the chart is below; for a teenager over about 155 cm and 50 kg, switch to the adult ski length calculator.
How it's calculated
Two published children's charts — NoomReviews' kids ski size chart and the Blizzard ski sizer — agree within a couple of centimetres at every height, and this calculator interpolates the band they define: at 94 cm tall the band is 70–80 cm, at 127 cm it is 110–120 cm, at 150 cm it is 135–145 cm, and so on. Ability picks the point in the band: a beginner takes the low end (the ski reaches about the chest), an intermediate the middle (chin to nose), an advanced or racing child the high end (nose to forehead).
Weight then applies the sizers' own rule: a child heavy for their height (15% or more above the chart's typical weight for that height) shifts the whole band up 3 cm; a light child shifts it down 3 cm. What the calculator will never do is add length for growth — both source charts warn against it explicitly, because an oversize ski is harder to turn, slower to learn on, and the commonest cause of a child deciding they hate skiing.
Why kids size differently
A child's ski has a different job from an adult's. The skier is lighter (so the ski must be softer and shorter to bend at all), still building the strength to pivot a ski across the fall line, and learning movements that an over-long ski actively punishes. That is why the children's bands sit proportionally shorter than the adult chart: a beginner adult skis at roughly height minus 13 cm, while a beginner child skis at height minus 20 cm or more.
Height is the primary input because the band follows it; age is only a rough proxy printed on the charts for convenience. Two 8-year-olds can be 20 cm apart in height — size the one in front of you.
Worked example
An 8-year-old, 127 cm tall and 26 kg, skiing confidently on blues. The published band for 127 cm is 110–120 cm; an intermediate picks the middle: 115 cm — about nose height. A first-season child the same size would take the bottom of the band (110 cm); a young racer, the top. Note what the calculator will not do: it will not add centimetres "to grow into" — an oversize ski is the commonest reason children fight their turns.
The kids ski length chart
The published bands this calculator reads from — height first, age only as a rough cross-check.
| Typical age | Height | Typical weight | Ski length range | Middle of the range |
|---|---|---|---|---|
| ~3 yrs | 94 cm (3 ft 1 in) | ~14 kg | 70–80 cm | 75 cm |
| ~4 yrs | 102 cm (3 ft 4 in) | ~16 kg | 80–90 cm | 85 cm |
| ~5 yrs | 109 cm (3 ft 7 in) | ~18 kg | 90–100 cm | 95 cm |
| ~6 yrs | 114 cm (3 ft 9 in) | ~21 kg | 97–107 cm | 102 cm |
| ~7 yrs | 119 cm (3 ft 11 in) | ~23 kg | 100–110 cm | 105 cm |
| ~8 yrs | 127 cm (4 ft 2 in) | ~26 kg | 110–120 cm | 115 cm |
| ~9 yrs | 135 cm (4 ft 5 in) | ~29 kg | 117–127 cm | 122 cm |
| ~10 yrs | 140 cm (4 ft 7 in) | ~32 kg | 120–130 cm | 125 cm |
| ~11 yrs | 145 cm (4 ft 9 in) | ~36 kg | 130–140 cm | 135 cm |
| ~12 yrs | 150 cm (4 ft 11 in) | ~41 kg | 135–145 cm | 140 cm |
| ~13 yrs | 155 cm (5 ft 1 in) | ~46 kg | 140–150 cm | 145 cm |
| ~14 yrs | 165 cm (5 ft 5 in) | ~51 kg | 150–160 cm | 155 cm |
Height bands and ranges reconcile two published charts (NoomReviews' kids ski size chart and the Blizzard ski sizer), which agree within a couple of centimetres everywhere; ages and weights are the 50th-percentile pairings those charts print. Kids grow at wildly different rates — size by the height and weight in front of you, not the age. From about 155 cm and 50 kg, adult skis take over.
Renting vs buying for children
For most families the economics favour season rentals: children change band every season or two, and a season rental guarantees the right length all winter for less than a purchase that is outgrown by February. If you buy, buy at the band position their skiing dictates today and plan to pass the skis down or trade them in — children's skis hold resale value precisely because every parent faces the same arithmetic.
Related calculators
- Ski Length ChartSki length chart by height and weight: adult, women, men, youth and beginner lengths, plus cross-country and pole sizing tables.
- Beginner Ski Length CalculatorBeginner ski length calculator: the right first ski length from the published beginner chart — chin height, weight-adjusted, with rental guidance.
- Ski Pole Length CalculatorSki pole length calculator: downhill, cross-country classic and skate pole lengths from your height — the three published formulas and the grip test.
Sizing for yourself while you're here? The adult ski length calculator covers grown-up skiers.
Frequently asked questions
How long should skis be for a child?
Stand the ski beside the child. Beginners: chest to chin. Children linking turns confidently: chin to nose. Advanced and young racers: nose to forehead. In numbers, that works out to roughly 15-25 cm shorter than the child's height for beginners, and 10-15 cm shorter for advanced children — the calculator reads the exact published band for the height.
Should I buy kids' skis a size up so they last two seasons?
No — not beyond the top of the published band for their height. Both source charts warn against it: an oversize ski is difficult to pivot, encourages sitting back, and slows learning far more than a season's growth helps. If you buy mid-season and expect growth, buy at the band's top end — that is as far as 'room to grow' honestly goes.
Why does weight change a child's ski length?
Weight matters because a ski has to bend under the skier. A heavy-for-height child on the band's bottom end will overpower the ski; a light child on the top end can't flex it. The charts handle it by shifting the band: heavy shifts up about 3 cm, light shifts down about 3 cm, and the calculator applies the same rule.
When should a child move to adult skis?
At about 155 cm tall and over 50 kg, rental shops and manufacturers move children onto adult skis and the adult chart — the build and strength are there to flex them. Junior skis remain right up to that line; below it, adult skis are too stiff and too heavy even if the length looks correct on paper.
Sources
- NoomReviews — Kids Ski Size Chart — height/weight/age bands for children's ski lengths
- Blizzard ski sizer — second published children's chart; the two agree within ~2 cm per band
- INTERSPORT Rent — kids' ski sizing guide — level rules (chest/chin/nose) and the adult-ski threshold at ~155 cm / 50 kg
Last verified: 27 October 2026
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