STEP 1: Tracing of the Foot Place your bare foot on a sheet of paper on the floor, exerting your full weight on the foot for precise measurements, while someone else is slowly tracing around your foot ensuring the pen or pencil is at a 90-degree angle. STEP 2: Measure The Length With a measuring tape, measure from the edge of your heel to the edge of the longest toe. STEP 3: Measure The Width With a measuring tape measure, from side to side, the widest part of your bare foot at your bunion joint.