However, if you want to know which size your hand belongs to, follow these instructions, please: measure perimeter of your hand with a piece of string or an inch-tape (right-handed people their right hand and left-handed people their left hand) over your joints. Human hand is the widest in the area of finger joints and splint bones. Your hand must be closed so that the end of your index finger can touch slightly your thumb tip. This length in centimetres is the size of your hand and you can find out the needed size of your glove with the following table.