How to measure your feet. Remember to measure both feet, making a note of the longest. Place your foot on a flat surface with your heel against a straight edge. Place a ruler beside your foot touching the straight edge your heel is also touching, then take the length in millimetres from the tip of your longest toe to your heel.The following three formulas are used to calculate your shoe size based on your foot length. USM= (3 * L) - 22 U SM = (3 ∗ L) − 22. USF= (3 * L) - 21 U SF = (3 ∗ L) − 21. USC= (3 * L) - 9.67 U SC = (3 ∗ L) − 9.67. Where L is the length in inches. USM is men's size. USF is females size. USC is children's size. Shoe Size Definition.
The foot length in cm is converted into the shoe size of the respective size system (i.e., the EU-, UK-, US- or Mondopoint system ) according to ISO formulas. The following shoe size tables for foot length in cm are also based on this ISO specification.
US Sizing. US Male: 3 x foot length in inches - 22. US Female: 3 x foot length in inches - 21. US Child: 3 x foot length in inches - 9.67. UK Sizing. UK Adult: 3 x foot length in inches - 23. UK Child: 3 x foot length in inches - 10. EU Sizing. EU Size = 1.27 x (UK Size + 23) + 2. How To Use The Shoe Size Calculator. 3iHdDHp.