ROCKROOSTER Boot Size Chart: US, EU & UK Sizing
Official ROCKROOSTER boot size chart: men’s, women’s and kids’ US, EU and UK sizes, foot length in inches and centimetres, and recommended width for medium, wide and extra-wide fittings. All figures are reproduced directly from the ROCKROOSTER sizing workbook.
Download the full sizing workbook (XLSX)
How to measure your foot for boots
Measure at the end of the day, wearing the socks you will use with the boots.
- Stand on paper with your heel against a wall.
- Mark the tip of your longest toe — not always the big toe.
- Measure from the wall to the mark; repeat on the other foot and use the longer measurement.
- Match it to the foot length column. Take the width at the ball of the foot — length alone does not determine fit.
Men’s boot size chart
| US | EU | UK | Foot length (in) | Foot length (cm) | Medium | Wide | X-Wide |
|---|---|---|---|---|---|---|---|
| 6 | 38 | 5 | 9.45 | 24 | 8.8125 | 9.1875 | 9.5625 |
| 7 | 39 | 6 | 9.84 | 25 | 9.0625 | 9.4375 | 9.8125 |
| 7.5 | 40 | 6.5 | 10 | 25.5 | 9.1875 | 9.5625 | 9.9375 |
| 8 | 41 | 7 | 10.24 | 26 | 9.3125 | 9.6875 | 10.0625 |
| 8.5 | 41.5 | 7.5 | 10.43 | 26.5 | 9.4375 | 9.8125 | 10.1875 |
| 9 | 42 | 8 | 10.63 | 27 | 9.5625 | 9.9375 | 10.3125 |
| 9.5 | 42.5 | 8.5 | 10.83 | 27.5 | 9.6875 | 10.0625 | 10.4375 |
| 10 | 43 | 9 | 11.02 | 28 | 9.8125 | 10.1875 | 10.5625 |
| 10.5 | 43.5 | 9.5 | 11.22 | 28.5 | 9.9375 | 10.3125 | 10.6875 |
| 11 | 44 | 10 | 11.42 | 29 | 10.0625 | 10.4375 | 10.8125 |
| 11.5 | 45 | 10.5 | 11.61 | 29.5 | 10.1875 | 10.5625 | 10.9375 |
| 12 | 46 | 11 | 11.81 | 30 | 10.3125 | 10.6875 | 11.0625 |
| 13 | 47 | 12 | 12.2 | 31 | 10.5625 | 10.9375 | 11.3125 |
| 14 | 48 | 13 | 12.6 | 32 | 10.8125 | 11.1875 | 11.5625 |
| 15 | 49 | 14 | 12.99 | 33 | 11.0625 | 11.4375 | 11.8125 |
Women’s boot size chart
| US | EU | UK | Foot length (in) | Foot length (cm) | Medium | Wide | X-Wide |
|---|---|---|---|---|---|---|---|
| 5 | 35 | 2.5 | 8.66 | 22 | 8.125 | 8.5625 | 8.9375 |
| 6 | 36.5 | 3.5 | 9.06 | 23 | 8.375 | 8.8125 | 9.1875 |
| 6.5 | 37 | 4 | 9.25 | 23.5 | 8.5 | 8.9375 | 9.3125 |
| 7 | 37.5 | 4.5 | 9.45 | 24 | 8.625 | 9.0625 | 9.4375 |
| 7.5 | 38 | 5 | 9.65 | 24.5 | 8.75 | 9.1875 | 9.5625 |
| 8 | 38.5 | 5.5 | 9.84 | 25 | 8.875 | 9.3125 | 9.6875 |
| 8.5 | 39 | 6 | 10 | 25.5 | 9 | 9.4375 | 9.8125 |
| 9 | 40 | 6.5 | 10.24 | 26 | 9.125 | 9.5625 | 9.9375 |
| 9.5 | 41 | 7 | 10.43 | 26.5 | 9.25 | 9.6875 | 10.0625 |
| 10 | 42 | 8 | 10.63 | 27 | 9.375 | 9.8125 | 10.1875 |
| 11 | 43 | 9 | 11.02 | 28 | 9.625 | 10.0625 | 10.4375 |
| 12 | 44 | 10 | 11.42 | 29 | 9.875 | 10.3125 | 10.6875 |
Kids’ boot size chart
Canadian and Japanese sizes are included alongside US, EU and UK.
Walker — 12 to 24 months
| US | EU | UK | Canadian | Japanese | Foot length (in) | Foot length (cm) |
|---|---|---|---|---|---|---|
| 4.5 | 20 | 3.5 | 4.5 | 12 | 4.625 | 11.7 |
| 5 | 20 | 4 | 5 | 12.5 | 4.75 | 12.1 |
| 5.5 | 21 | 4.5 | 5.5 | 13 | 5 | 12.7 |
| 6 | 22 | 5 | 6 | 13.5 | 5.125 | 13 |
| 6.5 | 22 | 5.5 | 6.5 | 14 | 5.25 | 13.3 |
| 7 | 23 | 6 | 7 | 14.5 | 5.5 | 14 |
Toddler — 2 to 4 years
| US | EU | UK | Canadian | Japanese | Foot length (in) | Foot length (cm) |
|---|---|---|---|---|---|---|
| 7.5 | 24 | 6.5 | 7.5 | 15 | 5.625 | 14.3 |
| 8 | 24 | 7 | 8 | 15.5 | 5.75 | 14.6 |
| 8.5 | 25 | 7.5 | 8.5 | 15.5 | 6 | 15.2 |
| 9 | 25 | 8 | 9 | 16 | 6.125 | 15.6 |
| 9.5 | 26 | 8.5 | 9.5 | 16.5 | 6.25 | 15.9 |
| 10 | 27 | 9 | 10 | 17 | 6.5 | 16.5 |
| 10.5 | 27 | 9.5 | 10.5 | 17.5 | 6.625 | 16.8 |
| 11 | 28 | 10 | 11 | 18 | 6.75 | 17.1 |
| 11.5 | 29 | 10.5 | 11.5 | 18.5 | 7 | 17.8 |
| 12 | 30 | 11 | 12 | 18.5 | 7.125 | 18.1 |
Little Kid — 4 to 8 years
| US | EU | UK | Canadian | Japanese | Foot length (in) | Foot length (cm) |
|---|---|---|---|---|---|---|
| 12.5 | 30 | 11.5 | 12.5 | 19 | 7.25 | 18.4 |
| 13 | 31 | 12 | 13 | 19.5 | 7.5 | 19.1 |
| 13.5 | 31 | 12.5 | 13.5 | 20 | 7.625 | 19.4 |
| 1 | 32 | 13 | 1 | 20.5 | 7.75 | 19.7 |
| 1.5 | 33 | 13.5 | 1.5 | 21 | 8 | 20.3 |
| 2 | 33 | 1 | 2 | 21.5 | 8.125 | 20.6 |
| 2.5 | 34 | 1.5 | 2.5 | 21.5 | 8.25 | 21 |
| 3 | 34 | 2 | 3 | 22 | 8.5 | 21.6 |
Big Kid — 8 to 12 years
| US | EU | UK | Canadian | Japanese | Women’s US | Foot length (in) | Foot length (cm) |
|---|---|---|---|---|---|---|---|
| 3.5 | 35 | 2.5 | 3.5 | 22.5 | 5.5 | 8.625 | 21.9 |
| 4 | 36 | 3 | 4 | 23 | 6 | 8.75 | 22.2 |
| 4.5 | 36 | 3.5 | 4.5 | 23.5 | 6.5 | 9 | 22.9 |
| 5 | 37 | 4 | 5 | 24 | 7 | 9.125 | 23.2 |
| 5.5 | 37 | 4.5 | 5.5 | 24.5 | 7.5 | 9.25 | 23.5 |
| 6 | 38 | 5 | 6 | 25 | 8 | 9.5 | 24.1 |
| 6.5 | 38 | 5.5 | 6.5 | 25.5 | 8.5 | 9.625 | 24.4 |
| 7 | 39 | 6 | 7 | 26 | 9 | 9.75 | 24.8 |
How to read a boot size chart
- Start from foot length. US, EU and UK labels vary between manufacturers; only the centimetre measurement is system-independent.
- Half sizes. Adult ranges run in half sizes through the middle and in full sizes at the top (men’s 13–15, women’s 11–12). A missing half size is not offered.
- Width. Medium, wide and extra-wide change volume at the ball, not length. Between two columns, take the wider one — it cannot be added later.
- Men’s and women’s charts are not interchangeable. Separate lasts and grading, not a simple offset; use the chart for the product listing.
- Kids. Re-measure every three to four months; children’s feet grow in steps, not continuously.
If you are between boot sizes
ROCKROOSTER boots fit true to size for most wearers. If your foot length falls between two rows, take the larger size — especially with thick socks or on long descents, where the foot moves forward. Allow about a thumb’s width beyond the longest toe. A slightly large boot can be corrected with an insole or a thicker sock; a small one cannot.
Fit check before you buy
- Toe: a thumb’s width at the end when standing.
- Ball: the foot’s widest point sits at the boot’s widest point.
- Heel: lifts slightly when unlaced, does not slide when laced.
- Instep: no pressure with laces at working tension.
- Volume: no side-to-side movement inside the boot when tied.
Try them on in the afternoon, in work socks, on a hard surface — carpet hides heel slip.
Data notes
All values, including the width columns, are reproduced from the ROCKROOSTER sizing workbook, which labels them “Recommended Foot Width (Ball Girth)” and states them in inches. Where inches and centimetres differ by rounding, use the centimetre value.
For sizing on a specific model, or for regional size runs, contact our team.