Alpinestars Boot Size Chart | US, Euro & JPN Sizing

Alpinestars boot and footwear size chart converting US, Euro and Japanese sizes for men’s and women’s boots, with a separate chart for men’s road performance boots.

Alpinestars Boot & Footwear Size Chart

Men's Boots & Shoes

Alpinestars footwear conversion. Boots sold in US sizes, including off-road boots.

US Euro Japan
5 38 24
6 39 25
7 40.5 25.5
8 42 26.5
9 43 27.5
10 44.5 29
11 45.5 29.5
12 47 30.5
13 48 31.5
14 49.5 32.5
15 51 33.5
16 52 34.5

Men's Road Performance Boots

Boots sold in EU sizes: SMX-1 R, SMX-6, SMX Plus, SP-1, SP-2, Supertech R.

Euro US
36 3.5
37 4
38 5
39 6
40 6.5
41 7.5
42 8
43 9
44 9.5
45 10.5
46 11.5
47 12
48 12.5
49 13.5
50 14

Women's Boots & Shoes

Alpinestars footwear conversion.

US Euro Japan
6 37 23
7 38 24
8 39 25
9 41 26
10 42 26.5

How to Use

Step Instructions
Step 1 Start with the US shoe size you normally wear and find it in the US column; the matching Euro size is in the same row.
Step 2 Road performance boots are sold in Euro sizes and use their own chart, so check the second table for those models.
Step 3 Fit varies by model. Wear the socks you ride in when trying boots on, and choose a snug fit with no heel lift.

Notes: Sizing is provided by the manufacturer. Alpinestars does not guarantee a perfect fit.