Some people have no idea what size they are or should be.
Your size of ski or snowboard boots can be worked out by simply measuring the maximum length of your feet in centimetres. This should be done in a weighted position. This involves being stood up with you knees bent. NOTE: Most people have one foot longer than the other.
Mr. Average wears size 9 shoes. His longest weighted measurement is 27cm. He therefore wears 27mp ski and snowboard boots.