Sizing on Brooksrunning.com.au is displayed in US sizes only. For international sizes, please see conversion chart, below.
| US Men | US Women | UK Men | UK Women | Europe Unisex | Japan Men (cm) | Japan Women (cm) |
| 3.5 | 5 | 2.5 | 3 | 35.5 | 22.5 | 22 |
| 4 | 5.5 | 3 | 3.5 | 36 | 23 | 22.5 |
| 4.5 | 6 | 3.5 | 4 | 36.5 | 23 | 23 |
| 5 | 6.5 | 4 | 4.5 | 37.5 | 23.5 | 23.5 |
| 5.5 | 7 | 4.5 | 5 | 38 | 24 | 24 |
| 6 | 7.5 | 5 | 5.5 | 38.5 | 24.5 | 24.5 |
| 6.5 | 8 | 5.5 | 6 | 39 | 25 | 25 |
| 7 | 8.5 | 6 | 6.5 | 40 | 25 | 25.5 |
| 7.5 | 9 | 6.5 | 7 | 40.5 | 25.5 | 26 |
| 8 | 9.5 | 7 | 7.5 | 41 | 26 | 26.5 |
| 8.5 | 10 | 7.5 | 8 | 42 | 26.5 | 27 |
| US Men | US Women | UK Men | UK Women | Europe Unisex | Japan Men (cm) | Japan Women (cm) |
| 9 | 10.5 | 8 | 8.5 | 42.5 | 27 | 28 |
| 9.5 | 11 | 8.5 | 9 | 43 | 27.5 | 28.5 |
| 10 | 11.5 | 9 | 9.5 | 44 | 28 | 29 |
| 10.5 | 12 | 9.5 | 10 | 44.5 | 28.5 | 29.5 |
| 11 | 12.5 | 10 | 10.5 | 45 | 29 | 30 |
| 11.5 | 13 | 10.5 | 11 | 45.5 | 29.5 | |
| 12 | 11 | 11.5 | 46 | 30 | ||
| 12.5 | 11.5 | 12 | 46.5 | 30.5 | ||
| 13 | 12 | 13 | 47.5 | 31 | ||
| 14 | 13 | 14 | 48.5 | 32 | ||
| 15 | 14 | 15 | 49.5 | 33 | ||
| 16 | 15 | 50.5 | 34 |