UGG Shoe Size Chart
UGG runs large — consider sizing down.
Runs SmallTrue to SizeRuns Large
UGG Men's Size Chart
| US | EU | UK | JP / CM |
|---|---|---|---|
| 4 | 36 | 3 | 22 |
| 4.5 | 36.5 | 3.5 | 22.5 |
| 5 | 37 | 4 | 23 |
| 5.5 | 37.5 | 4.5 | 23.5 |
| 6 | 38 | 5 | 24 |
| 6.5 | 38.5 | 5.5 | 24.5 |
| 7 | 39.5 | 6 | 25 |
| 7.5 | 40 | 6.5 | 25.5 |
| 8 | 40.5 | 7 | 26 |
| 8.5 | 41 | 7.5 | 26.5 |
| 9 | 42 | 8 | 27 |
| 9.5 | 42.5 | 8.5 | 27.5 |
| 10 | 43 | 9 | 28 |
| 10.5 | 43.5 | 9.5 | 28.5 |
| 11 | 44 | 10 | 29 |
UGG Women's Size Chart
| US | EU | UK | JP / CM |
|---|---|---|---|
| 5 | 36 | 3 | 22 |
| 5.5 | 36.5 | 3.5 | 22.5 |
| 6 | 37 | 4 | 23 |
| 6.5 | 37.5 | 4.5 | 23.5 |
| 7 | 38 | 5 | 24 |
| 7.5 | 38.5 | 5.5 | 24.5 |
| 8 | 39.5 | 6 | 25 |
| 8.5 | 40 | 6.5 | 25.5 |
| 9 | 40.5 | 7 | 26 |
| 9.5 | 41 | 7.5 | 26.5 |
| 10 | 42 | 8 | 27 |
| 10.5 | 42.5 | 8.5 | 27.5 |
| 11 | 43 | 9 | 28 |
| 11.5 | 43.5 | 9.5 | 28.5 |
| 12 | 44 | 10 | 29 |
Data verified Jun 2026 · Official size guide · See an error? Report it
Do UGGs run big, and should I size down?
Yes — UGG Classic boots run large and the sheepskin stretches with wear, so UGG recommends sizing down. If you're between sizes go a half size down; for whole-size-only Classic styles, drop to the nearest whole size. A US women's 8 is UK 6 and EU 39.5.
- Fit
- Runs large — size down
- Classic styles
- Whole sizes only
- US W 8 =
- UK 6 · EU 39.5
- CM
- 25
UGG Sizing & Fit Guide
UGG Classic sheepskin boots run large and stretch with wear, so UGG recommends sizing down — a half size down if you're between sizes, or down to the nearest whole size for whole-size-only Classic styles. UGG uses unified US sizing where the women's number is one above the men's.