Child Carrier Guide / Boot sizes
Merrell kids' hiking boot sizes by foot length
Merrell sizes kids' boots by foot length, measured from the heel to the longest toe in centimetres. Merrell's kids' size chart lists 36 sizes, from 8.5 cm (size 1 toddler) to 26 cm (size 7 big kid).
Boot size finder
Merrell kids' size chart
| US size | Merrell group | UK size | Foot length |
|---|---|---|---|
| US 1 | Little Kids/Toddler | UK 0.5 | 8.5 cm |
| US 2 | Little Kids/Toddler | UK 1.5 | 9.4 cm |
| US 3 | Little Kids/Toddler | UK 2.5 | 10.2 cm |
| US 4 | Little Kids/Toddler | UK 3 | 11.0 cm |
| US 4.5 | Little Kids/Toddler | UK 3.5 | 11.4 cm |
| US 5 | Little Kids/Toddler | UK 4 | 11.8 cm |
| US 5.5 | Little Kids/Toddler | UK 4.5 | 12.4 cm |
| US 6 | Little Kids/Toddler | UK 5 | 12.9 cm |
| US 6.5 | Little Kids/Toddler | UK 5.5 | 13.3 cm |
| US 7 | Little Kids/Toddler | UK 6 | 13.7 cm |
| US 7.5 | Little Kids/Toddler | UK 6.5 | 14.1 cm |
| US 8 | Little Kids/Toddler | UK 7 | 14.6 cm |
| US 8.5 | Little Kids/Toddler | UK 7.5 | 15.0 cm |
| US 9 | Little Kids/Toddler | UK 8 | 15.4 cm |
| US 9.5 | Little Kids/Toddler | UK 8.5 | 15.8 cm |
| US 10 | Little Kids/Toddler | UK 9 | 16.2 cm |
| US 10.5 | Big Kids/Pre-School | UK 9.5 | 16.5 cm |
| US 11 | Big Kids/Pre-School | UK 10 | 17.0 cm |
| US 11.5 | Big Kids/Pre-School | UK 10.5 | 17.5 cm |
| US 12 | Big Kids/Pre-School | UK 11 | 18.0 cm |
| US 12.5 | Big Kids/Pre-School | UK 11.5 | 18.5 cm |
| US 13 | Big Kids/Pre-School | UK 12 | 19.0 cm |
| US 13.5 | Big Kids/Pre-School | UK 12.5 | 19.5 cm |
| US 1 | Big Kids/Pre-School | UK 13 | 20.0 cm |
| US 1.5 | Big Kids/Pre-School | UK 13.5 | 20.5 cm |
| US 2 | Big Kids/Pre-School | UK 1 | 21.0 cm |
| US 2.5 | Big Kids/Pre-School | UK 1.5 | 21.5 cm |
| US 3 | Big Kids/Pre-School | UK 2 | 22.0 cm |
| US 3.5 | Big Kids/Grade School | UK 2.5 | 22.5 cm |
| US 4 | Big Kids/Grade School | UK 3 | 23.0 cm |
| US 4.5 | Big Kids/Grade School | UK 3.5 | 23.5 cm |
| US 5 | Big Kids/Grade School | UK 4 | 24.0 cm |
| US 5.5 | Big Kids/Grade School | UK 4.5 | 24.5 cm |
| US 6 | Big Kids/Grade School | UK 5 | 25.0 cm |
| US 6.5 | Big Kids/Grade School | UK 5.5 | 25.5 cm |
| US 7 | Big Kids/Grade School | UK 6 | 26.0 cm (Not confirmed) |
Sources: Merrell: kids' size guide, Bergfreunde: Merrell size chart.
Sizes also listed by Bergfreunde
Bergfreunde lists the same foot length, within 0.3 cm, for ten whole sizes: 10, 11, 12 and 13 in the smaller groups, then 1, 2, 3, 4, 5 and 6. For size 7 big kid, Merrell lists 26.0 cm and Bergfreunde lists 25.5 cm. That size is marked Not confirmed. European sizes differ between the two charts and are not included.
Foot growth rates from Merrell
- Ages 0 to 15 months: half a size every 2 months.
- Ages 15 months to 2 years: half a size every 2 to 3 months.
- Ages 2 to 3 years: half a size every 3 to 4 months.
- Ages 3 to 5 years: half a size every 4 months.
At Merrell's rate for ages 3 to 5, a foot grows half a size in about four months. That is Merrell's general rate, not a measurement of one child.