Measure your calf circumference at the widest part of your calf
Measure your ankle circumference at the narrowest part above the ankle bone
Measure your leg length from the floor to just below the knee
Measure in the morning when swelling is lowest
Stand or sit with your foot flat on the floor while measuring
Use a flexible measuring tape
Keep the tape snug but not tight
Compare your measurements to the sock brand’s sizing chart
Measure both legs if they differ in size
Use the larger measurement if your legs are different sizes