Place the paper on a flat surface. Place your bare foot on the paper and stand on it. Use a pencil to trace an outline around your foot. Keep the pencil as straight as possible against your foot.
Measure the distance between the Tip of the longest toe and the back of the heel with the ruler. Subtract 0.2 inches(5mm/0.5cm) to compensate for the thickness of the pencil.
Measure the circumference of the widest part of your foot with a house-hold measuring tape. This is the part of your foot between the pincky toe and the joint of the big toe.
Repeat steps 1-3 for the other foot.
Take the longest and biggest measurements of your two feet to find your correct shoe size.
Review the Size chart for the style of shoes you intent to purchase, and select you size.