Ski Boot Size Chart & Mondo Calculator
Longer foot → starting Mondo → shell check.
Choose what you know
Heel to longest toe, standing. How to measure ·
Example shown — focus and type to replace it.Example shown — use the chart below.
Orientation only. Street-shoe labels and toe allowance vary, so this mode always returns a range.
Target reference: 15–<20 mm
Remove the liner, touch toes lightly to the front, then measure behind the heel. Show steps
Many alpine models: whole / following half. Some models: half / next whole.
Choose only when the exact model chart or boot-sole-length stamp (BSL) confirms the pattern.
Measurements stay in your browser and are not automatically saved. Share adds a URL fragment only when you choose it.
Your sizing result
Measure once. Leave with a plan.
Enter the longer foot. You will get a starting Mondo, shell-break checks, conversions, and the physical next step.
Example · Starting boot label · Mondo
Measured foot 26.2 cm
≈ US men 8.5 · US women 9.5 · EU 41
Rounded up to the next stocked 0.5 Mondo label.
Example only — replace 26.2 with your measurement.
Known foot length and the nominal Mondo target share one coordinate scale. The shell outline is schematic.
Foot length starts the size; a 0.5 label may still use the same physical shell. Verify the exact model chart or BSL.Length starts the size; half sizes can share a shell. Check this boot
Shell break: many alpine models pair a whole size with its following half; some pair a half size with the next whole. Verify the exact model chart or BSL.
The interactive calculator did not load. The static example, measuring guide, shell-check steps, and full chart remain available.
Accurate input
Measure both feet in 60 seconds
Open the step-by-step measuring guide
- Put paper on a hard floor with one edge against a wall.
- Follow the chosen brand's method: current charts differ between barefoot and a thin ski sock. Add no allowance.
- Stand with your heel at the wall and weight on that foot.
- Mark the longest toe with the pencil upright.
- Measure wall to mark; repeat and use the longer foot.
See your row before the full chart
A longer-foot measurement becomes one Mondo row, followed by approximate regional label translations.
Only the longer-foot measurement chooses the Mondo row. The other columns translate that label approximately; heel gap and BSL do not choose a row.
Physical verification
Run the shell check before you buy
The label is only a starting point. A liner-out heel-gap check tells you whether this exact physical shell is close, average, or clearly too roomy.
Read the boot
Three measurements, three different jobs
The useful lesson from a labelled boot diagram is not more dimensions—it is showing exactly where each number comes from before the chart asks you to use it.
- Foot length → starting Mondo
- Measure heel to longest toe. This body measurement starts the size calculation.
- Heel gap → fit this shell
- Measure behind the heel inside the empty plastic shell with the liner removed.
- BSL → identify the exterior shell
- The stamped boot-sole length is an outside-shell number used for shell and binding identification. It is not foot length.
Exterior boot height and removable-insole length can describe a product, but they are not Mondopoint inputs. Never substitute BSL for foot length.
- Remove the linerMeasure the plastic shell, not the cushioned inner boot.
- Wear a thin ski sockSlide the foot into the empty shell with the heel down.
- Touch the front lightlyLet the longest toe just meet the shell; do not curl the toes.
- Measure behind the heelEnter the gap in millimetres in “Check a boot.” About 10 mm is close, 20 mm average, and 30 mm too large in Atomic's current reference.
Reference zones are fitting guidance, not a diagnosis. Side contact, instep, heel pocket, liner and cuff still need assessment.
Model check
Half-size labels do not prove a different shell
Whole + following half
Atomic documents examples such as 26.0 / 26.5 sharing a shell.
Half + next whole
SCARPA documents examples such as 26.5 / 27.0 sharing a shell.
Both are real conventions. Check the exact model chart and the stamped boot-sole length (BSL); this tool does not infer a physical shell from the label alone.
Atomic's current broad reference anchors are about 10 mm close, 20 mm average, and 30 mm too large. Confirm the whole foot and exact model.
Verify this line with a real ruler. Print at 100% / Actual size; printer scaling varies.
skibootsizechart.com · measured result generated in your browser
Static reference
Ski boot size chart
Mondo / cm is the foot-length label—not BSL, exterior height, or removable-insole length. US/UK/EU labels are approximate and vary by manufacturer, product category, and model.
Scroll → Men · Women · UK · EU
| Mondo / cm | US Kids / Youth | US Men | US Women | UK | EU |
|---|---|---|---|---|---|
| 14.0 | 7K–8K | — | — | 6.5K–7.5K | 23–24⅔ |
| 14.5 | 7K–8K | — | — | 6.5K–7.5K | 23–24⅔ |
| 15.0 | 8K–9K | — | — | 7.5K–8.5K | 24⅔–26 |
| 15.5 | 8K–9K | — | — | 7.5K–8.5K | 24⅔–26 |
| 16.0 | 9K–10K | — | — | 8.5K–9.5K | 26–27⅔ |
| 16.5 | 9K–10K | — | — | 8.5K–9.5K | 26–27⅔ |
| 17.0 | 10K–11.5K | — | — | 9.5K–11K | 27⅔–29 |
| 17.5 | 10K–11.5K | — | — | 9.5K–11K | 27⅔–29 |
| 18.0 | 11.5K–12.5K | — | — | 11K–12K | 29–30⅔ |
| 18.5 | 11.5K–12.5K | — | — | 11K–12K | 29–30⅔ |
| 19.0 | 12.5K–13.5K | — | — | 12K–13K | 30⅔–32 |
| 19.5 | 12.5K–13.5K | — | — | 12K–13K | 30⅔–32 |
| 20.0 | 1Y–2Y | — | — | 0.5–1.5 | 32–33⅔ |
| 20.5 | 1Y–2Y | — | — | 0.5–1.5 | 32–33⅔ |
| 21.0 | 2Y–3Y | — | — | 1.5–2.5 | 33⅔–35 |
| 21.5 | 2Y–3Y | — | — | 1.5–2.5 | 33⅔–35 |
| 22.0 | 3Y–4Y | 4 | 5 | 3 | 35 |
| 22.5 | 4Y–4.5Y | 4.5 | 5.5 | 3.5 | 36 |
| 23.0 | — | 5 | 6 | 4 | 36.5 |
| 23.5 | — | 5.5 | 6.5 | 4.5 | 37 |
| 24.0 | — | 6 | 7 | 5 | 38 |
| 24.5 | — | 6.5 | 7.5 | 5.5 | 38.5 |
| 25.0 | — | 7 | 8 | 6 | 39 |
| 25.5 | — | 7.5 | 8.5 | 6.5 | 40 |
| 26.0 | — | 8 | 9 | 7 | 40.5 |
| 26.5 | — | 8.5 | 9.5 | 7.5 | 41 |
| 27.0 | — | 9 | 10 | 8 | 42 |
| 27.5 | — | 9.5 | 10.5 | 8.5 | 42.5 |
| 28.0 | — | 10 | 11 | 9 | 43 |
| 28.5 | — | 10.5 | 11.5 | 9.5 | 44 |
| 29.0 | — | 11 | 12 | 10 | 44.5 |
| 29.5 | — | 11.5 | 12.5 | 10.5 | 45 |
| 30.0 | — | 12 | 13 | 11 | 45.5 |
| 30.5 | — | 12.5 | 13.5 | 11.5 | 46 |
| 31.0 | — | 13 | 14 | 12 | 47 |
| 31.5 | — | 13.5 | 14.5 | 12.5 | 47.5 |
| 32.0 | — | 14 | 15 | 13 | 48 |
| 32.5 | — | 15.5–16 | — | 14.5 | 50–50.5 |
| 33.0 | — | 16–16.5 | — | 15–15.5 | 51 |
| 33.5 | — | 17 | — | 15.5–16 | 51.5–52 |
| 34.0 | — | 17.5 | — | 16–16.5 | 52.5 |
| 34.5 | — | 18 | — | 17 | 53–53.5 |
What the number cannot see
Length is only one dimension
- Width and instep
- Last width is model-specific and cannot be prescribed from one length result.
- Heel and volume
- The same foot length can need a different heel pocket, instep height, liner, or shell shape.
- Flex
- Flex indexes are not standardized across brands and change with the skier, temperature, and construction.