👟 Brand to Brand
UGG to Brooks Shoe Size Conversion
Switching from UGG to Brooks? UGG runs large and Brooks runs true to size, so the size you order changes. Here's the full chart.
A UGG 8.5 works out to a Brooks 9 — about half a size up. The chart below has every size.
UGG → Brooks: size up half a size
A UGG 8.5 is a Brooks 9.
Find your UGG size on the left, read across for Brooks:
| UGG size | Brooks size | UK | EU | Foot (cm) |
|---|---|---|---|---|
| 6 | 6.5 | 5.5 | 37 | 23.5 |
| 6.5 | 7 | 6 | 38 | 24.3 |
| 7 | 7.5 | 6.5 | 38.5 | 24.7 |
| 7.5 | 8 | 7 | 39.5 | 25.1 |
| 8 | 8.5 | 7.5 | 41 | 25.9 |
| 8.5 | 9 | 8 | 41.5 | 26.3 |
| 9 | 9.5 | 8.5 | 42.5 | 26.7 |
| 9.5 | 10 | 9 | 43 | 27.1 |
| 10 | 10.5 | 9.5 | 43.5 | 27.5 |
| 10.5 | 11 | 10 | 44 | 27.9 |
| 11 | 11.5 | 10.5 | 44.5 | 28.3 |
| 11.5 | 12 | 11 | 45.5 | 28.7 |
| 12 | 12.5 | 11.5 | 46 | 29.1 |
| 12.5 | 13 | 12 | 47 | 29.5 |
| 13 | 13.5 | 12.5 | 47.5 | 29.9 |
| 13.5 | 14 | 13 | 48 | 30.3 |
| 14 | 14.5 | 13.5 | 49 | 31.1 |
| 14.5 | 15 | 14 | 49.5 | 31.5 |
⚠️ Fit varies by model. UGG runs about half a size large and moulds to the foot — size down half, or a full size for slippers. Brooks runs true to size with a generous toe box; multiple widths are offered.
Brooks to UGG → · UGG chart · Brooks chart · Brand finder
What is a UGG 8.5 in Brooks?
A UGG 8.5 is about a Brooks 9 — they share a foot length of roughly 26.3 cm (UK 8, EU 41.5).
Do UGG and Brooks fit the same?
No — UGG runs large and Brooks runs true to size, so size up half a size when you switch.
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