Shoe sizes in the United Kingdom 🇬🇧, Ireland 🇮🇪, India 🇮🇳, Pakistan 🇵🇰 and South Africa is based on the length of the last used to make the shoe, measured in barleycorns (1⁄3 inch) starting from the smallest size deemed practical, which is called size zero. It is not formally standardised.
| au | br | brannock | cm | eu | mondopoint | mx | us |
|---|---|---|---|---|---|---|---|
| 4 1/2 | 35 | 5 1/2 | 23.5 | 37 | 235 | 4 | 5 1/2 |