👟 Brand to Brand
Merrell to UGG Shoe Size Conversion
Switching from Merrell to UGG? Merrell runs true to size and UGG runs large, so the size you order changes. Here's the full chart.
Merrell runs 0.5 size larger than UGG, so you may need to size down when switching.
Size up 0.5 moving to UGG
UGG runs smaller — order half a size larger than your Merrell size.
Find your Merrell size on the left, read across for UGG:
| Merrell size | UGG size | UK | EU | Foot (cm) |
|---|---|---|---|---|
| 6.5 | 6 | 5.5 | 37 | 23.5 |
| 6.5 | 6 | 5.5 | 37.5 | 23.9 |
| 7 | 6.5 | 6 | 38 | 24.3 |
| 7.5 | 7 | 6.5 | 38.5 | 24.7 |
| 8 | 7.5 | 7 | 39.5 | 25.1 |
| 8 | 7.5 | 7 | 40 | 25.5 |
| 8.5 | 8 | 7.5 | 41 | 25.9 |
| 9 | 8.5 | 8 | 41.5 | 26.3 |
| 9.5 | 9 | 8.5 | 42.5 | 26.7 |
| 10 | 9.5 | 9 | 43 | 27.1 |
| 10.5 | 10 | 9.5 | 43.5 | 27.5 |
| 11 | 10.5 | 10 | 44 | 27.9 |
| 11.5 | 11 | 10.5 | 44.5 | 28.3 |
| 12 | 11.5 | 11 | 45.5 | 28.7 |
| 12.5 | 12 | 11.5 | 46 | 29.1 |
| 13 | 12.5 | 12 | 47 | 29.5 |
| 13.5 | 13 | 12.5 | 47.5 | 29.9 |
| 14 | 13.5 | 13 | 48 | 30.3 |
| 14 | 13.5 | 13 | 48.5 | 30.7 |
| 14.5 | 14 | 13.5 | 49 | 31.1 |
| 15 | 14.5 | 14 | 49.5 | 31.5 |
⚠️ Fit varies by model. Merrell runs true to size with a roomy toe box; wide options exist. UGG runs about half a size large and moulds to the foot — size down half, or a full size for slippers.
UGG to Merrell → · Merrell chart · UGG chart · Brand finder
What is a Merrell 10.5 in UGG?
A Merrell 10.5 is about a UGG 10 — they share a foot length of roughly 27.5 cm (UK 9.5, EU 43.5).
Do Merrell and UGG fit the same?
Not quite — UGG runs about 0.5 size smaller than Merrell.
ⓘ Affiliate links below. As an Amazon Associate we earn from qualifying purchases at no extra cost to you.
Recommended on Amazon
Foot Measuring Device
Measure once, buy any brand with confidence.
View on Amazon →