Ski Boot Size Chart & Mondo Calculator

Longer foot → starting Mondo → shell check.

Choose what you know

Example

Heel to longest toe, standing. How to measure ·

Example shown — focus and type to replace it.Example shown — use the chart below.

Measurements stay in your browser and are not automatically saved. Share adds a URL fragment only when you choose it.

Your sizing result

Example · Starting boot label · Mondo

26.5

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.

Example — replace the input
SHELL OUTLINE: SCHEMATIC 262 mm foot 26.5 nominal target

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

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
  1. Put paper on a hard floor with one edge against a wall.
  2. Follow the chosen brand's method: current charts differ between barefoot and a thin ski sock. Add no allowance.
  3. Stand with your heel at the wall and weight on that foot.
  4. Mark the longest toe with the pencil upright.
  5. Measure wall to mark; repeat and use the longer foot.
Example preview

See your row before the full chart

A longer-foot measurement becomes one Mondo row, followed by approximate regional label translations.

Heel-to-toe measurement before chart conversion 26.2 cm
Longer foot 26.2 cm
Mondo / cm26.5
US Kids / Youth—
US Men8.5
US Women9.5
UK7.5
EU41
Foot length selects this row Heel gap checks one shell BSL identifies the exterior shell

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.

Where ski-boot measurements are taken Annotated side view separating foot length, liner-out heel gap, and exterior boot sole length.
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.

  1. Remove the linerMeasure the plastic shell, not the cushioned inner boot.
  2. Wear a thin ski sockSlide the foot into the empty shell with the heel down.
  3. Touch the front lightlyLet the longest toe just meet the shell; do not curl the toes.
  4. 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.

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

Approximate Mondo ski boot size conversions from 14.0 to 34.5
Mondo / cmUS Kids / YouthUS MenUS WomenUKEU
14.07K–8K——6.5K–7.5K23–24⅔
14.57K–8K——6.5K–7.5K23–24⅔
15.08K–9K——7.5K–8.5K24⅔–26
15.58K–9K——7.5K–8.5K24⅔–26
16.09K–10K——8.5K–9.5K26–27⅔
16.59K–10K——8.5K–9.5K26–27⅔
17.010K–11.5K——9.5K–11K27⅔–29
17.510K–11.5K——9.5K–11K27⅔–29
18.011.5K–12.5K——11K–12K29–30⅔
18.511.5K–12.5K——11K–12K29–30⅔
19.012.5K–13.5K——12K–13K30⅔–32
19.512.5K–13.5K——12K–13K30⅔–32
20.01Y–2Y——0.5–1.532–33⅔
20.51Y–2Y——0.5–1.532–33⅔
21.02Y–3Y——1.5–2.533⅔–35
21.52Y–3Y——1.5–2.533⅔–35
22.03Y–4Y45335
22.54Y–4.5Y4.55.53.536
23.0—56436.5
23.5—5.56.54.537
24.0—67538
24.5—6.57.55.538.5
25.0—78639
25.5—7.58.56.540
26.0—89740.5
26.5—8.59.57.541
27.0—910842
27.5—9.510.58.542.5
28.0—1011943
28.5—10.511.59.544
29.0—11121044.5
29.5—11.512.510.545
30.0—12131145.5
30.5—12.513.511.546
31.0—13141247
31.5—13.514.512.547.5
32.0—14151348
32.5—15.5–16—14.550–50.5
33.0—16–16.5—15–15.551
33.5—17—15.5–1651.5–52
34.0—17.5—16–16.552.5
34.5—18—1753–53.5

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.

Guide