Find your perfect fit.
Every foot is different, which is why choosing the right size is about more than just foot length.
Factors such as high or low insteps, wide or narrow feet, high arches, bunions, and toe shape can all affect fit. For this reason, we do not recommend sizing based on foot measurements or insole lengths.
Instead, we recommend selecting your size based on the international sneaker size you most commonly wear in brands such as Nike or Adidas, as our sizing is aligned to these.
How Should My UGG Boots Fit?
Our boots are crafted from Premium, dense Twin-Face Australian Merino sheepskin. The wool naturally compresseS, softens and moulds to your feet over time, creating a personalised fit.
When new, your boots should feel snug:
- Your toes may lightly touch the front of the boot or sit within approximately 0.5 cm of the front.
- If you can fit two fingers between your toes and the front of the boot, the size is likely too large.
- If your toes extend past the front stitching or feel compressed against the front, we recommend sizing up.
Understanding Our Sizing
ll UGG Australia® products are sold and labelled in US sizing.
- US sizes are equivalent to Australian sizes.
- Women's UK sizes are generally two sizes smaller than US sizes (e.g. UK Women's 5 = US Women's 7).
- UK Men's and European sizing can vary significantly between brands, so we recommend using your usual US sneaker size as your guide.
If you are purchasing based on a men's sneaker size, please note that men's and women's sizing differs.
Between Sizes?
If you are typically a half size, we generally recommend sizing up. For example:
- Women's US 7.5 → Choose Women's US 8
- Men's US 8.5 → Choose Men's US 9
Understanding Dual Sizing
Many of our products are labelled on the sole with both men's and women's sizes:
- M6-W8 = Men's US 6 / Women's US 8
- M9-W11 = Men's US 9 / Women's US 11
Need Personalised Sizing Advice?
We're happy to help. Simply email us photos of the size tags from 2–3 pairs of sneakers you currently wear (Nike, Adidas, etc.), and our team can recommend the best size for you.
If you have specific fit requirements such as wide feet, high insteps, orthotics, or mobility concerns, please let us know.
WOMENS SIZING
| US/AU |
| US 5 |
| US 6 |
| US 7 |
| US 8 |
| US 9 |
| US 10 |
| US 11 |
MENS SIZING
| US/AU |
| US 7 |
| US 8 |
| US 9 |
| US 10 |
| US 11 |
| US 12 |
| US 13 |
| US 14 |
BABY SIZING
MEASUREMENT PROVIDED IN CENTIMETERS, ALLOWS FOR AN EXTRA 1 CM FRONT AND 1CM BACK OF DENSE SHEEPSKIN FLUFF
| US/AU |
| Small | 0-6 Months | 8.5cm Foot |
| Medium | 6-12 Months | 10cm Foot |
| Large | 1-2 Years | 12cm Foot |
| X-Large | 2-3 Years | 14cm Foot |
| XX- Large | 3-4 Years | 15.5cm Foot |
CHILDRENS SIZING
WE RECOMMEND YOU GO UP ONE SIZE. I.E. IF YOUR CHILD IS A 5, WHICH IS OUR 5-6, WE RECOMMEND YOU BUY A 7-8, AS THERE IS VERY DENSE SHEEPSKIN AROUND THE FOOT, MAKING IT HARD FOR CHILDREN TO GET INTO THEIR CURRENT SIZE.
| US/AU |
| 5-6 |
| 7-8 |
| 9-10 |
| 11-12 |
| 13-1 |
| 2-3 |
| 3 Youth | Womens 5 |
| 4 Youth | Womens 6 |
| 5 Youth | Womens 7 |
| 6 Youth | Womens 8 |