Ski Boot Size Chart & Sizing Guide

Size chart

Mondopoint is your foot length in cm, rounded to the nearest half-size boot shell (boots are typically sold in half-size Mondopoint increments, e.g. 26.5). Measure standing, in the sock weight you'll actually ski in.

How to measure your Mondopoint size

• Stand on a piece of paper with your heel against a wall and mark your longest toe, same as measuring for a regular shoe.
• Measure the distance from the wall to the mark in cm, then round to the nearest half-size boot shell available from the brand you're buying.
• Measure both feet and size the boot to the larger one — ski boots aren't sold in split pairs for uneven feet.
• Measure in the sock weight (thin, technical ski sock) you'll actually wear skiing, not a thick casual sock.

Why ski boots fit snugger than regular shoes

• A properly fitted ski boot should have your toes just brushing the front of the liner when standing upright, then pull back slightly off the front when you flex into a skiing stance.
• Boots that feel roomy or 'comfortable' standing around a shop floor are almost always oversized for actual skiing — a loose boot transfers less control to the ski and causes more foot movement (and blisters) inside the boot.
• New boot liners pack out (compress and mold to your foot) by several millimetres over the first days of use, so a boot that's genuinely snug on day one is closer to correct than one that already feels roomy.
• This is different from every other shoe-buying instinct — resist sizing up for 'comfort' the way you might with a sneaker.

Flex rating and width — beyond just length

• Flex rating (a number like 80, 100, 120) measures how stiff the boot is, matched to skier weight, ability, and aggressiveness — beginners and lighter skiers want a lower flex number, advanced/heavier or more aggressive skiers want higher.
• Boot width (last width, in mm) matters as much as length — a narrow-last boot on a wide foot causes pressure points regardless of correct Mondopoint length.
• A proper boot fitting at a ski shop, including checking width and using heat-moldable liners if needed, is worth it for anyone skiing more than a few days a season — this chart is a starting point, not a replacement for an in-person fitting.

Frequently asked questions