Verified brand-to-brand conversionBrooks vs ASICS shoe sizing
A Brooks US 12 is about an ASICS US 12.5 (EU 47) in men's sizes. ASICS fits about half a size smaller at the same printed size, so expect to take about half a size up in ASICS, based on both brands' official size charts.
Matched by foot length from both brands' published size charts · Updated July 2026
Brooks to ASICS size chart
Each row matches by foot length, the key both brands print their charts in. Sizes outside either brand's published range are not shown.
Men's
| Brooks US | Foot (cm) | ASICS US | ASICS EU |
|---|---|---|---|
| 7 | 25.0 | 6.5 | 39.5 |
| 7.5 | 25.5 | 7.5 | 40.5 |
| 8 | 26.0 | 8 | 41.5 |
| 8.5 | 26.5 | 8.5 | 42 |
| 9 | 27.0 | 9 | 42.5 |
| 9.5 | 27.5 | 9.5 | 43.5 |
| 10 | 28.0 | 10 | 44 |
| 10.5 | 28.5 | 11 | 45 |
| 11 | 29.0 | 11.5 | 46 |
| 11.5 | 29.5 | 12 | 46.5 |
| 12 | 30.0 | 12.5 | 47 |
| 12.5 | 30.5 | 13 | 48 |
| 13 | 31.0 | 14 | 49 |
| 14 | 31.5 | 15 | 50.5 |
Women's
| Brooks US | Foot (cm) | ASICS US | ASICS EU |
|---|---|---|---|
| 5 | 22.0 | 5 | 35.5 |
| 5.5 | 22.5 | 5.5 | 36 |
| 6 | 23.0 | 6 | 37 |
| 6.5 | 23.5 | 6.5 | 37.5 |
| 7 | 24.0 | 7 | 38 |
| 7.5 | 24.5 | 7.5 | 39 |
| 8 | 25.0 | 8 | 39.5 |
| 8.5 | 25.5 | 9 | 40.5 |
| 9 | 26.0 | 9.5 | 41.5 |
| 9.5 | 26.5 | 10 | 42 |
| 10 | 27.0 | 10.5 | 42.5 |
| 10.5 | 28.0 | 11.5 | 44 |
| 11 | 28.5 | 12.5 | 45 |
| 11.5 | 29.0 | 13 | 46 |
| 12 | 29.5 | 13.5 | 46.5 |
Brooks vs ASICS: common questions
Does ASICS run bigger or smaller than Brooks?
ASICS runs about half a size smaller than Brooks: the same foot takes a higher number in ASICS, though the exact gap shifts at some sizes. For example, a Brooks US 12 maps to an ASICS US 12.5.
Can I buy ASICS in my Brooks size?
No. The number on the box means a different foot length in each brand, which is why a straight size-for-size swap misfits. Use the table above or the converter to translate properly.
How do I convert my Brooks size to ASICS?
Find your Brooks size in the table above and read across, or use the converter with your exact size. The most reliable method is your measured foot length in centimeters: both brands publish their charts against it, so it translates without guesswork. Half sizes round to the nearest size the brand actually makes.
More brand conversions
Brand size charts: all brands in the converter
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