Sizing Guide

Footwear Sizing

The following information should help you determine the best shoe size to order. Once you receive your shoes, we highly recommend trying your shoes on and walking around the house to ensure you have the correct fit. In the case that you don’t, feel free to return them for exchange or refund within 30 days.

Understanding Sizing

  • Provided shoe lengths are a measurement from the back of the heel to the end of the longest toe.
  • Standard sizing for Men’s running shoes is “D” and standard sizing for Women’s running shoes is “B”. Many of our shoes also offered in extra narrow or wide sizing. See our shoe width chart below for more information.
  • The differences of width between narrow, standard, wide, and extra wide are usually only a couple millimeters and are proportional to the size of the shoe. Most additional width will be found in the forefoot.
  • In some cases, men can wear women’s styles to achieve a narrow fit and women can wear men’s to get a wide fit.

Sizing Tips

  • If your feet seem "between" sizes and you cannot decide which size to select, we suggest you choose the larger size. You can make adjustments for a better fit with socks, insoles, or a different lacing pattern.
  • Your heel should fit snug with no slipping. The midfoot of the shoe under your arch and over the top of your foot should be snug but not tight. You should have enough room in the toe box to wiggle your toes.
  • If your feet are cramping or "falling asleep" while running or just after running or the formation of blisters and calluses between or on your toes, then your shoes are too small.
  • Your left and right feet may differ in length or width as much as a full size. Be sure to measure and try shoes on both feet, and always buy shoes to fit your larger foot.
  • Since feet always swell during the day, we encourage you to try shoes on later in the day when your feet are at their largest.

Shoe Width Chart

Men   Women
  2A Narrow
Narrow B Standard
Standard D Wide
Wide 2E Extra Wide
Extra Wide 4E  

 

Sizing Charts

Jump to a specific brand:

adidas  /  Altra  /  Asics  /  Brooks  /  Hoka  /  Inov8  /  Mizuno  /  New Balance  /  Newton  /  Nike  /  Olukai  /  Reebok  /  Reef  /  Salomon  /  Sanuk  /  Saucony  /  Skechers  /  Under Armour

 

adidas Men's Shoe Sizing

US 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 12.5 13.0 14.0
UK 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12 12.5 13.5
Eur 38.7 39.3 40 40.7 41.3 42.0 42.7 43.3 44.0 44.7 45.3 46.0 46.7 47.3 48.0 49.3
 

adidas Women's Shoe Sizing

US 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0
UK 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5
Eur 36.0 36.6 37.3 38.0 38.6 39.3 40.0 40.6 41.3 42.0 42.6 43.3 44.0 44.6 45.3
 

Altra Men's Shoe Sizing

US 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 12.5 13.0 14.0 15.0 16.0
UK 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 13.0 14.0 15
Eur 41 42 42.5 43 44 44.5 45 46 46.5 47 48 49 50 51.5
CM 26.0 26.5 27.0 27.5 28.0 28.5 29.0 29.5 30.0 30.5 31.0 32.0 33.0 34.0
 

Altra Women's Shoe Sizing

US 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 13.0
UK 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 11.0
Eur 36.0 37.0 37.5 38.0 38.5 39.0 40.0 40.5 41.0 42.0 42.5 43.0 44.0 44.5 46.0
CM 22.0 22.5 23.0 23.5 24.0 24.5 25.0 25.5 26.0 26.5 27.0 27.5 28.0 28.5 29.5
 

ASICS Men's Shoe Sizing

US 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 12.5 13.0 14.0
UK 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 13.0
Eur 39.0 39.5 40.0 40.5 41.5 42.0 42.5 43.5 44.0 44.5 45.0 46.0 46.5 47.0 48.0 49.0
CM N/A N/A 25.0 25.5 26.0 26.5 27.0 27.5 N/A 28.0 28.5 29.0 29.5 30.0 30.5 31.0
 

Asics Women's Shoe Sizing

US 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0
UK 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10
Eur 36.0 37.0 37.5 38.0 39.0 39.5 40.0 40.5 41.5 42.0 42.5 43.5 44.0 44.5
CM 22.5 23.0 23.5 24.0 24.5 25.0 N/A 25.5 26.0 26.5 27.0 27.5 28.0 na
 

Brooks Men's Shoe Sizing

US 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 12.5 13.0 14.0 15.0
UK 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 13.0 14.0
Eur 38.5 39.0 40.0 40.5 41.0 42.0 42.5 43.0 44.0 44.5 45.0 45.5 46.0 46.5 47.5 48.5 49.5
CM 24.0 24.5 25.0 25.5 26.0 26.5 27.0 27.5 28.0 28.5 29.0 29.5 30.0 30.5 31.0 32.0 33.0
 

Brooks Women's Shoe Sizing

US 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0
UK 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0
Eur 35.5 36.0 36.5 37.0 38.0 38.5 39.0 40.0 40.5 41.0 42.0 42.5 43.0 44.0 44.5
 

Hoka Men's Shoe Sizing

US 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 12.5 13.0 14.0
UK 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 12.5 13.5
Eur 38.67 39.33 40.0 40.67 41.33 42.0 42.67 43.33 44.0 44.67 45.33 46.0 46.67 47.33 48.0 49.33
CM 24.0 24.5 25.0 25.5 26.0 26.5 27.0 27.5 28.0 28.5 29.0 29.5 30.0 30.5 31.5 32.5
 

Hoka Women's Shoe Sizing

US 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0
UK 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5
Eur 36.0 36.67 37.33 38.0 38.67 39.33 40.0 40.67 41.33 42.0 42.67
CM 22.0 22.5 23.0 23.5 24.0 24.5 25.0 25.5 26.0 26.5 27.0
 

Inov8 Men's Shoe Sizing

US 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 14 15
UK 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 13 14
Eur 38 38.5 39.5 40 40.5 41.5 42 42.5 43 44 44.5 45 45.5 46.5 47 48 50
CM 24 24.5 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 30.5 31 32 33
 

Inov8 Women's Shoe Sizing

US 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11
UK 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5
Eur 36 37 37.5 38 38.5 39.5 40 40.5 41.5 42 42.5
CM 22.5 23 23.5 24 24.5 25 25.5 26 26.5 27 27.5
 

Mizuno Men's Shoe Sizing

US 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 12.5 13.0 14.0 15.0
UK 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 13.0 14.0
Eur 39.33 40.0 40.67 41.33 42.0 42.67 43.33 44.0 44.67 45.33 46.0 46.67 47.33 48.67 50.0
CM 25.0 25.5 26.0 26.5 27.0 27.5 28.0 28.5 29.0 29.5 30.0 30.5 31.0 32.0 33.0
 

Mizuno Women's Shoe Sizing

US 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0
UK 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5
Eur 34.5 35.0 36.0 36.5 37.0 38.0 38.5 39.0 40.0 40.5 41.0 42.0 42.5 43.0 44.0
CM 21.5 22.0 22.5 23.0 23.5 24.0 24.5 25.0 25.5 26.0 26.5 27.0 27.5 28.0 28.5
 

New Balance Men's Shoe Sizing

US 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 12.5 13.0 14.0 15.0
UK 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 12.5 13.5 N/A
Eur 38.5 39.5 40.0 40.5 41.5 42.0 42.5 43.0 44.0 44.5 45.0 45.5 46.5 47.0 47.5 49.0 N/A
CM 24.0 24.5 25.0 25.5 26.0 26.5 27.0 27.5 28.0 28.5 29.0 29.5 30.0 30.5 31.0 32.0 N/A
 

New Balance Women's Shoe Sizing

US 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0
UK 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0
Eur 35.0 36.0 36.5 37.0 37.5 38.0 39.0 40.0 40.5 41.0 41.5 42.5 43.0 43.5 44.0
CM 22.0 22.5 23.0 23.5 24.0 24.5 25.0 25.5 26.0 26.5 27.0 27.5 28.0 28.5 29.0
 

Newton Men's Shoe Sizing

US 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 12.5 13.0 14.0 15.0
UK 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13
Eur 38.5 39 39.5 40 41 41.5 42 42.5 43 44 44.5 45 46 46.5 47 48 49
CM 24 24.5 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 30.5 31 32 33
 

Newton Women's Shoe Sizing

US 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12
UK 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10
Eur 35.5 36 37 37.5 38 38.5 39 39.5 40 41 41.5 42 42.5 43 43.5
CM 22.5 23 23.5 24 24.5 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5
 

Nike Men's Shoe Sizing

US 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 12.5 13.0 14.0 15.0
UK 5.5 6 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 13 14
Eur 38.5 39 40 40.5 41 42 42.5 43 44 44.5 45 45.5 46 46.5 47.5 48.5 49
CM 24 24.5 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 30.5 31 32 33
 

Nike Women's Shoe Sizing

US 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0
UK 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5
Eur 35.5 36 36.5 37.5 38 38.5 39 40 40.5 41 42 42.5 43 43.5 44
CM 22 22.5 23 23.5 24 24.5 25 25.5 26 26.5 27 27.5 28 28.5 29
 

Olukai Men's Shoe Sizing

US 7.0 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 13.0
UK 6.5 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12.5
Eur 40 41 41.5 42 42.5 43 43.5 44 44.5 145 46
Inches 9.625 " 9.9375 " 10.125 " 10.25 " 10.4375 " 10.5625 " 10.75 " 10.9375 " 11.125 " 11.25 " 11.5625 "
 

Olukai Women's Shoe Sizing

US 5.0 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 11.0
UK 3 4 4.5 5 5.5 6 6.5 7 7.5 8 9
Eur 35 36 36.5 37 37.5 38 38.5 39 39.5 40 41
Inches 8.5 " 8.875 " 9.0625 " 9.25 " 9.375 " 9.5 " 9.6875 " 9.875 " 10 " 10.1875 " 10.5 "
 

Reebok Men's Shoe Sizing

US 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 12.5 13.0 13.5 14.0 14.5 15.0
Heel-Toe 9.8" 10" 10.2" 10.4" 10.6" 10.8" 11" 11.2" 11.4" 11.6" 11.8" 12" 12.2" 12.4" 12.6" 12.8" 13"
Eur 39 40 40.5 41 42 42.5 43 44 44.5 45 45.5 46 47 48 48.5 49 50
UK 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 13.5 14
 

Reebok Women's Shoe Sizing

US 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 12
Heel-Toe 8.7" 8.9" 9.1" 9.3" 9.4" 9.6" 9.8" 10" 10.3" 10.4" 10.6" 10.8" 11" 11.4"
Eur 35 35.5 36 37 37.5 38 38.5 39 40 40.5 41 42 42.5 44
UK 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9.5
 

Reef Men's Footwear Sizing

US 7 8 9 10 11 12 13 14
Eur 39 40 42 43 44 45 46 47
Inches 9.84" 10.23" 10.62" 11.02" 11.41" 11.81" 12.2" 12.59"
 

Reef Women's Footwear Sizing

US 4 5 6 7 8 9 10 11
Eur 34 35 36 37.5 38.5 40 41 42.5
Inches 8.26" 8.66" 9.05" 9.44" 9.84" 10.23" 10.62" 11.02"
 

Salomon Women's Shoe Sizing

US 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0
UK 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 N/A N/A
Eur 36 36.6 37.3 38 38.6 39.3 40 40.6 41.3 42 42.6 43.3 44 N/A N/A
CM 22 22.5 23 23.5 24 24.5 25 25.5 26 26.5 27 27.5 28 N/A N/A
 

Salomon Women's Shoe Sizing

US 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0
UK 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 N/A N/A
Eur 36 36.6 37.3 38 38.6 39.3 40 40.6 41.3 42 42.6 43.3 44 N/A N/A
CM 22 22.5 23 23.5 24 24.5 25 25.5 26 26.5 27 27.5 28 N/A N/A
 

Sanuk Men's Footwear Sizing

US 6 7 8 8.5 9 9.5 10 10.5 11 11.5 12 13 14
Eur 39 40 41 41.5 42 42.5 43 43.5 44 44.5 45 46 47
UK 5 6 7 7.5 8 8.5 9 9.5 10 10.5 11 12 13
cm 24.5 25.3 26.2 26.6 27 27.4 27.8 28.3 28.7 29.1 29.5 30.4 31.2
 

Sanuk Women's Footwear Sizing

US 5 6 7 8 9 10 11
Eur 36 37 38 39 40 41 42
UK 3 4 5 6 7 8 9
cm 22.3 23.2 24 24.8 25.7 26.5 27.4
 

Saucony Men's Shoe Sizing

US 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 12.5 13.0 14.0 15.0
UK 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 13.0 14.0
Eur 38.5 39.0 40.0 40.5 41.0 42.0 42.5 43.0 44.0 44.5 45.0 46.0 46.5 47.0 48.0 49.0 50.0
CM 24.0 24.5 25.0 25.5 26.0 26.5 27.0 27.5 28.0 28.5 29.0 29.5 30.0 30.5 31.0 N/A N/A
JPN (cm)       22.5 23 23.5 24 24.5 25 25.5 26 26.5 27 27.5 28 28.5 29
CHN (mm)       225 230 235 240 245 250 255 260 265 270 275 280 285 290
 

Saucony Women's Shoe Sizing

US 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0
UK 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0
Eur 35.5 36.0 37.0 37.5 38.0 38.5 39.0 40.0 40.5 41.0 42.0 42.5 43.0
CM 21.5 22.0 22.5 23.0 23.5 24.0 24.5 25.0 25.5 26.0 26.5 27.0 27.5
 

Skechers Men's Shoe Sizing

US 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 12.5 13.0 13.5 14.0 15.0
UK 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 12.5 13.0 14.0
Eur 39.0 39.5 40.0 41.0 41.5 42.0 42.5 43.0 44.0 45.0 45.5 46.0 47.0 47.5 48.0 48.5 49.5
 

Skechers Women's Shoe Sizing

US 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0
UK -- -- 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0
Eur 35.0 35.5 36.0 36.5 37.0 37.5 38.0 38.5 39.0 39.5 40.0 40.5 41.0
 

Under Armour Men's Shoe Sizing

US 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 12.5 13.0 13.5 14.0 14.5 15.0 15.5 16.0
Inches 9.875 10 10.125 10.375 10.625 10.75 11 11.125 11.375 11.625 11.75 12 12.125 12.25 12.625 12.875 13 13.125 13.25
CM 25.0 25.5 26.0 26.5 27.0 27.5 28.0 28.5 29.0 29.5 30.0 30.5 31.0 31.5 32.0 32.5 33.0 33.5 34.0
Eur 40.0 40.5 41.0 42.0 42.5 43.0 44.0 44.5 45.0 45.5 46.0 47.0 47.5 48.0 48.5 49.0 49.5 50.0 50.5
UK 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 12.5 13.0 13.5 14.0 14.5 15.0
 

Under Armour Women's Shoe Sizing

US 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0
Inches 8.75 8.875 9.125 9.25 9.375 9.625 9.75 10 10.125 10.375 10.625 10.75 11 11.125 11.375
CM 22.0 22.5 23 23.5 24 24.5 25.0 25.5 26.0 26.5 27.0 27.5 28.0 28.5 29.0
Eur 35.5 36.0 36.5 37.5 38.0 38.5 39.0 40.0 40.5 41.0 42.0 42.5 43.0 44.0 44.5
UK 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5