1. Tape the sheet of paper to the floor, flush against the wall. Stand up straight on the sheet of paper with your heel up against the wall. 2. Place a mark on the paper at the longest part of your foot. Repeat with the other foot, as right and left sizes may be different. 3. Use a ruler to measure the heel-to-toe length you marked for each foot. Now match the longer of the two measurements to the MM or INCH column above to find the EMU size that will fit you best.