Find the size of your shoes by measuring the heel length to the big toe of you feet. This measure is most used to determine the shoe size.
Keep in mind that other factors also affect the way the shoe fits, including the width of your foot, the length of the arch and instep.
1. Place one foot on a piece of paper.
2. Make a mark on the paper at the end of your heel bone and the end of your big toe.
3. Measure the distance between these two points and repeat the process with the other foot.
If a foot is greater than the other, use the greater extent to determine the size of your shoes.