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.
Get your child's ski length
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
The height bands come from the published children's chart linked below (NoomReviews' kids ski size chart), cross-checked in this site's research against manufacturer sizer data — the sources agree within a couple of centimeters 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 inside the band — never the band's very ends: a beginner is read near the bottom, 15% of the way across (the ski reaches about the chest), an intermediate at the middle (chin to nose), an advanced or racing child near the top, 85% across (nose to forehead). That is why the calculator's picks land 13–22 cm below a beginner's height and 6–15 cm below an advanced child's at the chart's rows, rather than at the wider band-end figures.
Weight then applies the published up/down guidance — size longer for a heavy-for-height child, shorter for a light one — quantified here as a 3 cm shift of the whole band: a child heavy for their height (15% or more above the chart's typical weight for that height) shifts up 3 cm; a light child shifts down 3 cm. The 3 cm figure is this site's rule of thumb for that guidance. What the calculator will never do is add length for growth — the published guidance warns 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 12–13 cm, while a beginner child skis at roughly height minus 13 to 22 cm — the gap is widest for the smallest children and narrows as they grow.
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 gets 112 cm — near the band's bottom, not its very end; a young racer gets 119 cm, near the top. Note what the calculator will not do: it will not add centimeters "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 follow the published children's chart linked in the sources below (NoomReviews' kids ski size chart), cross-checked in this site's research against manufacturer sizer data — the sources agree within a couple of centimeters everywhere, and one row (114 cm) is read 2 cm wider here, midway between them. Ages and weights are the 50th-percentile pairings the chart prints. 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 favor 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, classic and skate pole lengths from your height — published XC multipliers, a calibrated downhill ratio, 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, the calculator's picks work out to roughly 13–22 cm shorter than the child's height for beginners, and 6–15 cm shorter for advanced children — it reads a point inside the published band for the height (near the bottom for a beginner, near the top for an advanced child), never the band's very ends.
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
- INTERSPORT Rent — kids' ski sizing guide — level rules (chest/chin/nose) and the adult-ski threshold at ~155 cm / 50 kg
Last verified: 28 October 2026
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