Step 1:
On flat surface, place paper on the ground and stand on the paper. Using a pencil, trace an outline of your foot. Try to straighten the pencil as best as possible against the foot.

Step 2:
Using a ruler, measure the distance between the tip of the longest toes and the back of the heel. In order to compensate for the pencil thickness, subtract 0.5 cm off the measurement.

Step 3:
From these values and using the table of shoe size conversion, select your shoe size.