Shoe Sizing Chart: Find Your Shoe Size
To determine your US, UK or Euro size:

Use a ruler or tape measurer to measure your foot (from your heel to the tip of your longest toe).
Choose a table below (US to your US size, UK to your UK size, Euro to your Euro size).
Find the closest measurement, in inches, that is equal to or greater than the length of your foot. For example, a man whose foot measures 11 1/4" is a US size 12, UK size 12, Euro size 47.
Measuring Tips:

To ensure accurate reading when measuring, flatten your foot by shifting your weight forward.
If your measurement is between two sizes, always move to the larger size.
Be sure to measure both feet. Many people have feet of different sizes. Fit to the larger of the two.
Fit yourself at a similar time as when you will be wearing the footwear. For daily footwear, fit yourself when you've been on your feet all day because your feet have expanded.