Altra Men's and Women's Footwear Size Chart

 Men's Shoes Size Guide

US UK  EU JAPAN (CM)
7 6 40 25
7.5 6.5 40.5 25.5
8 7 41 26
8.5 7.5 42 26.5
9 8 42.5 27
9.5 8.5 43 27.5
10 9 44 28
10.5 9.5 44.5 28.5
11 10 45 29
11. 10.5 46 29.5
12 11 46.5 30
12.5 11.5 47 30.5
13 12 48 31

Women's Shoes Size Guide

US UK  EU JAPAN (CM)
5.5 3.5 36 22
6 4 37 22.5
6.5 4.5 37.5 23
7 5 38 23.5
7.5 5.5 38.5 24
8 6 39 24.5
8.5 6.5 39.5 25
9 7 40 25.5
9.5 7.5 40.5 26
10 8 41 26.5

Size Guide:

  • Place your heel against the wall.
  • Place a ruler or measuring tape on the floor with the starting point aligned with your heel.
  • Measure the length of your foot from your heel to the tip of your longest toe.
  • After measuring your actual foot length,add 1–1.5 cm to your actual foot size for comfort while running.
  • Compare the resulting length to the size chart above, choosing the size that includes the added length.

PRO TIPS:

  • Measure your feet in the evening when they are at their largest, as this will make the measurement more accurate.
  • If one foot is slightly larger than the other, choose the larger size for comfort.