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 |
|---|---|---|---|---|---|---|---|
| 6 1/2 | 37.5 | 7 1/2 | 25 | 39.5 | 250 | 6 | 7 1/2 |