Ski Boot Size Chart: Mondopoint Conversion and Fit Guide (2026)
Convert your shoe size to Mondopoint, then fine-tune with foot width, flex and a shell fit check for boots that feel right.
How Ski Boot Sizing Works
Ski boots are sized in Mondopoint, which is simply the length of your foot in centimeters. If your foot measures 26.5cm, you start with a 26.5 boot. Because ski boots must hold your foot firmly for control, they fit more snugly than street shoes. After length, the most important factors are width (last), flex and a shell fit check. Shopping for boots? See the best ski boots.
Ski Boot Size Chart
| Mondopoint (cm) | US Men's | US Women's | EU | UK |
|---|---|---|---|---|
| 22.0 | 4 | 5 | 35 | 3 |
| 23.0 | 5 | 6 | 36.5 | 4 |
| 23.5 | 5.5 | 6.5 | 37 | 4.5 |
| 24.0 | 6 | 7 | 38 | 5 |
| 25.0 | 7 | 8 | 39 | 6 |
| 25.5 | 7.5 | 8.5 | 40 | 6.5 |
| 26.0 | 8 | 9 | 40.5 | 7 |
| 26.5 | 8.5 | 9.5 | 41 | 7.5 |
| 27.0 | 9 | 10 | 42 | 8 |
| 27.5 | 9.5 | 10.5 | 42.5 | 8.5 |
| 28.0 | 10 | 11 | 43 | 9 |
| 28.5 | 10.5 | 11.5 | 44 | 9.5 |
| 29.0 | 11 | 12 | 44.5 | 10 |
| 29.5 | 11.5 | — | 45 | 10.5 |
| 30.0 | 12 | — | 46 | 11 |
| 31.0 | 13 | — | 47 | 12 |
| 32.0 | 14 | — | 48 | 13 |
This is a comfort-fit conversion. Brands vary slightly; always check the maker's chart. Performance skiers often choose about a half to one size smaller for a tighter fit.
How to Measure Your Foot
- Stand on a piece of paper against a wall, wearing a thin ski sock.
- Mark the tip of your longest toe.
- Measure from the wall to the mark in centimeters. That's your Mondopoint.
- Measure both feet and use the longer one.
- Measure the width across the widest part of your forefoot.
Boot Width (Last)
| Last Width | Category | Best For |
|---|---|---|
| About 97–98mm | Narrow | Narrow feet, performance fit |
| About 100mm | Medium | Average feet |
| About 102mm+ | Wide | Wide feet, comfort |
Last widths are usually quoted for a size 26.5 boot.
Flex Rating
| Skier | Typical Men's Flex | Typical Women's Flex |
|---|---|---|
| Beginner | About 60–80 | About 50–70 |
| Intermediate | About 80–100 | About 70–90 |
| Advanced | About 100–120 | About 90–110 |
| Expert | About 120+ | About 110+ |
Flex isn't standardized; a 100 in one brand can feel different in another. Heavier skiers often need stiffer boots.
The Shell Fit Check
- Remove the liner from the boot.
- Put your foot in the empty shell and slide it forward until your toes touch the front.
- Check the space behind your heel: about one to two fingers (roughly 1–2cm) suits most recreational skiers.
How Ski Boots Should Feel
- Toes lightly brush the front when standing upright.
- Toes pull back slightly when you flex forward.
- Heel stays down when you flex.
- No sharp pain or numbness, though new boots feel snug.
Liners pack out with use, so a boot that feels slightly snug in the shop often feels right after a few days. A professional boot fitter can help with tricky feet. More on choosing boots: ski boots. Snowboarder? See the snowboard size chart and snowboard boots.
Frequently Asked Questions
What is Mondopoint?
Mondopoint is the length of your foot in centimeters, used to size ski boots. A 27.0 Mondopoint boot fits a foot about 27cm long.
Should ski boots be the same size as my shoes?
Not exactly. Ski boots are sized by foot length in centimeters, and many skiers end up in a boot that feels snugger than their shoes.
How tight should ski boots be?
Snug with no painful pressure points. Your toes should lightly touch the front when standing straight and pull back slightly when you flex forward into a skiing stance.
What is last width?
The width of the boot's forefoot, usually measured in millimeters. Narrow is about 97–98mm, medium about 100mm and wide about 102mm or more.
What flex should I choose?
Softer flex for beginners and lighter skiers, stiffer flex for advanced and heavier skiers. Flex numbers vary between brands.