Find your ski boot size
Type your foot length. You get your Mondopoint, the street sizes for the same foot, and the size on each brand’s own ski boot chart.
Mondopoint, explained
Mondopoint (ISO 9407: size is foot length in millimetres) sizes a boot by the foot it fits, not by the boot. Ski boots print it in centimetres, in 5 mm steps, so every half centimetre is a size. Each brand’s chart sets the exact foot lengths a size covers; we round your length up to the next half centimetre, so 26.5 is for feet up to 265 mm.
One scale everywhere
Mondopoint is the same scale in every country: no US, UK or EU versions, and no separate men’s and women’s scales. Brands differ only in the exact foot lengths each size covers.
Your length is your size
Measure your foot in centimetres and you have your size. Round up to the next half centimetre.
Measure for ski boots
Step 01
Thin ski socks
Measure in the thin ski socks you’ll ski in. Thick socks don’t make a boot warmer; they make it fit worse.
Step 02
Heel to the wall, standing
Paper on a hard floor, heel against the wall, weight on the foot, knees straight.
Step 03
Mark the longest toe
Pen upright, touching the tip of your longest toe. Then measure to the mark in millimetres.
Step 04
Measure width too
Ski boots come in narrow, medium and wide lasts. Your width tells you which to try.
Full instructions, with the mistakes to avoid: how to measure your foot.
Mondopoint size chart
| Mondo | Foot up to | US men’s | US women’s | UK | EU |
|---|---|---|---|---|---|
| 22 | 22.0 cm | 4 | 5.5 | 3 | 35 |
| 22.5 | 22.5 cm | 5 | 6.5 | 4 | 36 |
| 23 | 23.0 cm | 5.5 | 7 | 4.5 | 36.5 |
| 23.5 | 23.5 cm | 6 | 7.5 | 5 | 37.5 |
| 24 | 24.0 cm | 6.5 | 8 | 5.5 | 38 |
| 24.5 | 24.5 cm | 7 | 8.5 | 6 | 39 |
| 25 | 25.0 cm | 8 | 9.5 | 7 | 39.5 |
| 25.5 | 25.5 cm | 8.5 | 10 | 7.5 | 40.5 |
| 26 | 26.0 cm | 9 | 10.5 | 8 | 41 |
| 26.5 | 26.5 cm | 9.5 | 11 | 8.5 | 42 |
| 27 | 27.0 cm | 10 | 11.5 | 9 | 42.5 |
| 27.5 | 27.5 cm | 10.5 | 12 | 9.5 | 43.5 |
| 28 | 28.0 cm | 11.5 | 13 | 10.5 | 44 |
| 28.5 | 28.5 cm | 12 | 13.5 | 11 | 45 |
| 29 | 29.0 cm | 12.5 | 14 | 11.5 | 45.5 |
| 29.5 | 29.5 cm | 13 | 14.5 | 12 | 46.5 |
| 30 | 30.0 cm | 13.5 | 15 | 12.5 | 47 |
| 30.5 | 30.5 cm | 14.5 | 16 | 13.5 | 48 |
| 31 | 31.0 cm | 15 | — | 14 | 48.5 |
How a ski boot should fit
A new ski boot should feel tighter than any shoe you own. The liner packs out over the first days of skiing, so a boot that feels comfortable in the shop is often too big by the end of the week.
Step 01
Toes brush the front
Standing straight in the boot, buckled, your longest toe should just touch the front of the liner.
Step 02
Toes free when you flex
Bend your knees into a skiing stance: your heel settles back and your toes come off the front.
Step 03
The shell check
Take the liner out, step into the shell, toes to the front: the gap behind your heel should be about one finger for a snug fit, two for comfort.
Step 04
Heel stays down
Lean forward: your heel shouldn’t lift. Heel lift means the boot is too big or the wrong shape.
Shells, half sizes and lasts
Ski boot shells are moulded in whole sizes, and the half size above usually shares the same shell with a thicker liner or footbed. Salomon prints them that way on its chart, as pairs like 26–26.5.So if a 26.5 is too big, a 26 may not help: try 25.5.
- Last width is the inside width of the shell at the forefoot, in millimetres, quoted for a mid size. Narrow, medium and wide lasts suit narrow, average and wide feet; compare it with your foot width. How to measure foot width.
- Flex is how stiff the boot is to bend forward. It depends on your weight and skiing, not on your size.
- Heat-mouldable liners are shaped to your foot in the shop and pack out less.
Kids’ ski boots
- Measure the same way, standing, in ski socks. Children’s ski boots use Mondopoint too: Rossignol and Salomon kids’ charts are in the calculator.
- Resist buying a size up to grow into: a loose boot lets the foot slide, which makes skiing harder and colder. Half a size of room at most.
- Check the fit every season. Rental and second-hand boots make sense while feet grow.
Questions
What size ski boot am I if I wear a US 9 shoe?
For the standard US men’s 9, the foot is up to 26.25 cm, which is Mondo 26.5. But shoe sizes vary by brand: measure your foot for the real number.
Should ski boots be smaller than my shoe size?
Usually they come out the same or slightly smaller, because a ski boot fits your foot exactly while shoes leave room. Go by your measured length, not by your shoe size.
My foot is 26.3 cm. Is that Mondo 26 or 26.5?
Mondo 26.5: a 26 fits feet up to 26.0 cm. A boot fitter may still put you in a 26 shell if you like a tight fit, since 26 and 26.5 often share a shell.
Do ski boots stretch?
The liner packs out by a few millimetres in the first days. The plastic shell doesn’t stretch on its own, but a boot fitter can heat and punch it where it presses.
Are men’s and women’s ski boots sized differently?
No: both use Mondopoint. Women’s boots are usually narrower with a lower cuff and softer flex, so the shape differs, not the size.
Are touring and freeride boots sized the same way?
Yes, in Mondopoint. Touring boots are often roomier and lighter; try your measured size first.