WhatGearFits

Skiing guide

Kids Ski Helmet Size Guide

How to measure for a youth ski helmet — head circumference, fit checks for goggle compatibility, and what MIPS means for beginner buyers.

By Updated June 12, 2026Reference draft; source review in progressHow we research

Best next step

Check the table, then confirm the brand chart.

Child skiing down a snowy mountain slope
Skiing

Photo: Jochen van Wylick / Unsplash

Ski helmets are required at most resorts and ski schools for children under 14, and strongly recommended for all ages. The sizing process is the same as any other helmet: measure head circumference just above the eyebrows, then match to the brand chart. The important difference for ski helmets is goggle compatibility — the helmet and goggles must fit together without a gap at the forehead.

MIPS stands for Multi-directional Impact Protection System. It is a liner inside the helmet that can rotate slightly during an angled impact, reducing rotational force on the brain. Most major ski helmet brands now offer MIPS as a feature at all price points. For youth helmets, MIPS is worth prioritizing when the price difference is small, though a well-fitting standard helmet is better than a poorly fitting MIPS helmet.

Editorial note

We use these guides as starting ranges, then compare the recommendation against brand charts, fit checks, and sport-specific safety rules before surfacing gear links. Read more about how our sizing works.

Spot a range that looks off, or a league rule we should mention? Tell us — corrections make these guides better for every parent.

Step 1

Find the likely size range

Open calculator
Ski helmet size by head circumference
Player / measurementStarting sizeNotes
Under 50 cm head circumferenceXS YouthVery small youth heads. Check goggle fit with the specific helmet model.
50-53 cmS YouthCommon beginner youth range. Confirm the helmet stays level when shaken side to side.
53-56 cmM Youth / S AdultMany youth helmets top out here — check if an adult small fits better.
56-59 cmM AdultTeen and adult range. Confirm goggle compatibility before buying separately.

Step 2

Measure before you shop

Points to measure

Ski helmet measuring path

Measure head circumference one finger-width above the eyebrows.

Ski helmet measurement diagram showing head circumference, helmet size chart, MIPS explanation, and fit checks.
  1. 1CircumferenceTape loops just above the eyebrows and ears.
  2. 2Level fitHelmet sits level, not tilted back.
  3. 3Goggle gapNo skin gap between helmet and goggle frame.
  1. 1Wrap a flexible tape around the head about one finger-width above the eyebrows. Keep the tape level all the way around.
  2. 2Write down the measurement in centimeters and match to the brand chart.
  3. 3Try the helmet on: it should sit level, not tipped back. Shake the head side to side — the helmet should not rock independently.

Good reasons

When to size up

  • Your child is between sizes and the larger size still feels controlled.
  • The season is several months long and the gear is not protective headgear.
  • The brand chart says the current measurement is at the top of a range.

Avoid these

Common mistakes

  • Buying only for growth and making the gear hard to control.
  • Skipping the brand chart because another brand fit last season.
  • Ignoring league rules for bats, balls, sticks, and protective equipment.

Parent tip

Try the helmet on with the goggles your child will use. There should be no skin gap between the helmet brim and the top of the goggle frame. If buying both together, confirm the fit as a set.

FAQ

Is this size guaranteed to fit?

No. Treat it as a good starting point, then check the brand's official size chart before buying.

What should I do when my child is between sizes?

Consider comfort, growth, position, league rules, and whether the gear is protective. Avoid sizing up helmets without a proper chart match.

Related guides

Know your child's starting size before you shop.

Answer 4 quick questions — sport, gear type, age, and height — and get a beginner-safe size range plus what to avoid.