Keen Sandals, Shoes, Boots & Footwear Size Chart, Guide & Fit Advice

Mondo Sizes
Keen footwear uses the Mondo sizing system, where each whole size is equivalent to exactly 1cm in length.  To ensure the best fit we recommend:

    ●  If you have owned Keen before buy the same again; their sizing has not changed.

    ●  Shop using Mondo sizes.

    ●  Follow our "How to Measure Your Mondo Size" advice and video lower down this page.   

    ●  Shop using US sizes.

US Sizes
Correct as shown below.

UK Sizes
Keen's sizes for UK Men are correct, as shown below.
Keen's sizes for UK Women are a half size over stated - men's and women's sizes should be the same!
If buying women's shoes and your normal shoe size is UK 6, buy a Keen Women's UK 5.5

EU Sizes
We recommend you do not buy using EU sizes because Keen have screwed up!  There is no difference between men's and women's sizes and the table below contains other Keen mistakes.  If you prefer to shop using EU sizes, please refer to the  "Absolute" column which shows the correct size conversions.

On Our Website.....
On our website we use Keen sizes (even though they are not always correct) because these are what appear on the shoe boxes and the shoes themselves.

Keen Shoe & Footwear Sizes

 Size Conversions by:
212 3 33 234
21.52.5 3.5 34 2.534.7
27.58.5 89.5 10.542.5418.542.7
289 10 43 943.3
28.59.5 10.5 44 9.544
2910 11 44.5 1044.7
29.510.5 11.5 45 10.545.3
3011 12 46 1146
3112 13 47 1247.3
3213 14 47.5 1348.7
3314 15 48 1450
3415 16 48.5 1551.3
3516 17 49 1652.7

 Source: Keen & Absolute

Absolute Confidence

We are experts on shoe sizing and are confident in the information we have provided because we:

Tick  Have been selling shoes in our Sports Shop for years.

Tick  Carefully research sizes for every brand we sell.

Tick  Are very proud of our extremely low returns rate.

Tick  Have been selling footwear online since 2004.

How to Measure Your Mondo Size

The Mondopoint size of a shoe is the length of the shoe's insole measured in cm. To work out your size, the best way is to look it up on a pair shoes which fit you well or to measure the length of the insole on your best fitting pair of shoes. Remove the insole and measure, using a steal measuring tape, from the extreme tip of the toe to the extreme tip of the heel. The measurement will ALWAYS be exact to the nearest 0.5cm. You will never get 30.2 or 28.8; it will always be 30.0 exactly. This is your mondo shoe or boot size. Checkout this video to have Adam explain it all in plain English.  He is using a snowboard boot but the same principle applies to all footwear.

Still not sure what size to get?

Buy a few pairs to try at home. We offer:

Tick  FREE Delivery on most orders to most destinations.

Tick  Low Cost Returns within the UK.

Additional Help & Advice

Tick  Browse our Advice Centre for more buying guides.

Tick  Email any time.

Tick  Phone during normal Shop Hours

Tick  Visit our Mountain Sports ShopAddress